Computers and studio gear Thu, 18 Apr 19 14:16:40 -0600 Computers and studio gear en-CA Nvidia RTX 20xx Turing GPUs - little performance for much more money Wed, 14 Feb 2018 15:34:55 -0700 Vitaliy_Kiselev 19013@/talks/discussions Rumors for now

  • Initial announcement will happen at GPU Technology Conference at 26 to 29 March.
  • GPU will be based on simplified Volta architecture
  • Will have around 30% performance boost, mostly due to memory and more cores
  • It'll be variants with GDDR6 and GDDR5 RAM, staring with 4GB (due to RAM shortages)
  • Recommended price will be around 10% more than Pascal upon introduction
  • Actual price will be around 35-40% more for at least half a year
AMD Zen 2 aka Ryzen 3000 CPUs details Tue, 06 Nov 2018 17:02:23 -0700 Vitaliy_Kiselev 20830@/talks/discussions image



The move to 7nm allowed AMD to make lot of advances with its Rome-based EPYC processor core microarchitecture:

  • 2X Performance per Socket
  • 4X Floating Point performance per socket
  • Previous gen socket compatible
  • Forward compatible with next gen Milan platform that supports PCI Express 4 connectivity
  • Improved branch prediction 
  • Better instructions prefetch 
  • Re-optimized micro-op instruction cache
  • Increased the size of the micro-op cache  
  • Doubled floating point width to 256-bit 
  • Doubled load store bandwidth 
  • Increased dispatch and retire bandwidth 
  • Results in maintained high throughput for all modes

Nice thing

ColorChecker Passport Photo 2 - not much new Thu, 11 Apr 2019 18:29:05 -0600 Vitaliy_Kiselev 21880@/talks/discussions



Now includes 18% grey target and updated software to create custom ICC Camera Profiles for Capture One Pro users; plus, added support of ColorChecker Digital SG target

Birmingham, UK, 11 April 2019 -- X-Rite Incorporated, the world leader in colour management and measurement technologies, aannounces ColorChecker Passport Photo 2, an improved solution that helps professional and enthusiast photographers alike to reduce image processing time and maintain colour control and consistency from capture to edit. Quickly and easily set white balance and exposure, create custom DNG or ICC camera profiles, and instantly enhance portraits and landscapes.

X-Rite created the industry-standard ColorChecker Passport Photo 10 years ago, which included three photographic targets plus DNG camera calibration software. Passport Photo 2 now combines four photographic targets, featuring a new 18% Grey Balance target, plus upgraded ColorChecker Camera Calibration software that adds ICC camera profile creation, especially useful for Capture One users, or anyone working in an ICC compatible workflow.

"Our original ColorChecker Passport quickly became an industry standard for managing colour at capture," says Liz Quinlisk, Global Business Unit Manager, Photo & Video at X-Rite Incorporated. "Now, with the added functionality of a grey balance target and ICC camera profiling, it's more powerful than ever. Not only have we broadened our ability to serve Capture One and other ICC workflow users, but every photographer will have all the targets they need in a very portable, protective case."

ColorChecker Passport Photo 2 includes:

NEW Camera Calibration Software v2.0

Now create a custom DNG or ICC camera profile utilising an X-Rite ColorChecker Classic or Digital SG target. Camera profiling ensures accurate colour at capture based on specific lighting, camera and lens combination during any given shoot, saving valuable time in edit. The newly supported ColorChecker Digital SG target offers an extended gamut to create a more accurate ICC profile.

NEW Grey Balance Target

Often referred to as middle grey, the 18% Grey Balance target is the de facto industry standard reference used to set proper camera exposure or check lighting ratios and light distribution, which is especially important for portrait photography. It can be used with either a reflective handheld light meter, or in-camera meter for determining exposure and can also be used to set neutral balance and remove colour casts.

White Balance Target 

Create custom in-camera white balance for a consistent white point across a set of images with no need to correct each individual image later.

Classic Target 

For more than forty years, the Classic 24-patch target has been the industry standard colour reference used for visual colour assessment and for creating custom camera profiles.

Creative Enhancement Target 

Neutralise and create a look with single click enhancement patches; check and evaluate shadow details and highlight clipping; control colour shifts.

Lightroom® Plug-In 

Create custom DNG camera profiles directly in Adobe® Lightroom® Classic and Lightroom® Classic CC.

Portable Protective Case 

Adjusts to accommodate multiple positions to easily incorporate into any scene. Also includes a new handy lanyard.

"Since colours fade with age and light exposure, replacing a target that is several years old ensures complete colour accuracy when building camera profiles," adds Liz Quinlisk. "Now is the perfect time for photographers to upgrade their toolkit with a Passport Photo 2 and take full advantage of the power and versatility that the updated hardware and software deliver together to save valuable time and achieve the ultimate in colour accuracy."

X-Rite recommends replacement of colour reference targets every 18-24 months.


ColorChecker Passport Photo 2 is currently available through X-Rite Photo Europe. ColorChecker Camera Calibration software is available as a free download here.

With more colour science experience than anyone in the industry, X-Rite ColorChecker Passport Photo 2 was truly created by Colour Perfectionists for Colour Perfectionists.

What CPU and GPU to edit 10bit 4k video? Wed, 15 Feb 2017 09:30:21 -0700 apefos 16454@/talks/discussions GH5 offer 10 bit 422 4k video.

There are some 4k 10 bit monitor from Samsung, Asus, and so on...

So the question is: what Nvidia GPU will offer 10 bit support for editing 4k 10 bit 422 in premiere cuda aceleration? Will the GeForce GPU be good enough? Or there is a need for highend Quadro nvidia gpu?

iMac with Retina Display Thu, 16 Oct 2014 13:40:20 -0600 Vitaliy_Kiselev 11572@/talks/discussions image

Has 5,120 x 2,880 pixel display
From i5 CPU

Available at:

Capitalism: Planning and DRAM Mon, 29 May 2017 08:04:14 -0600 Vitaliy_Kiselev 17041@/talks/discussions image


Capitalism is very efficient, somewhere. DRAM prices (same as NAND) is kind of mad, due to production/consumption issues and cartel agreements that followed.

x499 Threadripper new chipset coming Tue, 02 Apr 2019 10:32:19 -0600 Vitaliy_Kiselev 21834@/talks/discussions From Gigabyte certification filings:


X499 Aorus Xtreme Waterforce, X499 Aorus Master and X499 Designare EX-10G new motherboards.

AMD X570, B550 chipsets and what we know about them Mon, 28 Jan 2019 08:25:22 -0700 Vitaliy_Kiselev 21414@/talks/discussions
  • First in Ryzen family of chipsets made inside company, chipsets are very profitable business, this is why AMD doing this
  • Much higher TDW of 15 watts
  • 4x PCIe 3.0 lines connecting CPU and chipset will be replaced by 4x PCIe 4.0 lines doubling throughput
  • All lines provided by chipset will be PCIe 3.0 or PCIe 4.0.
  • Number of provided lines will rise by 25-50%
  • It'll have 4 USB 3.1 Gen2 ports controller not requiring additional Asmedia chips and supporting part of power delivery standards.
  • We can see build in 10Gbe network controller (that will still require additional chips and transformer).
  • ]]>
    Ninja Inferno with HDR and 4Kp60 Thu, 23 Mar 2017 15:18:33 -0600 Vitaliy_Kiselev 16625@/talks/discussions

    Available at

    Melbourne, Australia – 23rd March 2017: Today, Atomos brings the power of 4Kp60 10-bit ProRes recording and HDR monitoring to the GH5 for an amazingly low price of just $995.

    “Our message to video Pro’s is to Go HDR 4Kp60 Today showcased by the GH5 and Ninja Inferno combo”, said Jeromy Young CEO and co-founder of Atomos. “For less than $3k it’s an unbeatable total package especially when considering having 4K HDR content ready for clients, Netflix and YouTube is a must”.

    Atomos has always led the way advancing the quality, affordability and simplicity of filmmaking by adding professional features to popular Japanese cameras. Atomos are again first to launch a portable HDR 4Kp60 10-bit 422 monitor recorder. Timed with the release of the powerful Panasonic GH5 and a $995 price point Ninja Inferno empowers the masses.

    Just as the original Atomos Ninja broke open DSLR filmmaking by giving the Canon 5DMKIII professional Apple ProRes recording & the original Atomos Shogun pioneered 4K with the Sony a7s and Panasonic GH4, the Ninja Inferno now arms the Panasonic GH5, the hottest camera of 2017, with HDR Apple Pro-Res 10-bit 4:2:2 4Kp60 over HDMI 2.0 – a feat not possible internally on the GH5. This marks another incredible Atomos breakthrough – professional 10-bit color resolution, 4:2:2 color accuracy, high frame rate 4K 60p video resolution & all with the incredible brightness range that HDR delivers in PQ or HLG.

    Apart from being an obvious companion for the new GH5, the Ninja Inferno is the world’s first HDMI monitor-recorder to accept 4K DCI signals from cameras like the Panasonic GH4 / DVX200 / HCX1000 / UX180 / HCX1, Sony FS7 / Z100 and the JVC LS300. Support for the 4096 DCI standard unlocks cinema recording from these 4K video & mirrorless DSLRs.

    For the Ninja Inferno, like its flagship sibling the Shogun Inferno, we have created the ultimate monitor through end-to-end custom engineering of all components. It starts with a 1920x1200 resolution LCD panel and add 10-bit processing in highlights and equivalent 10+ bit resolution in blacks. This is achieved through the patented AtomHDR engine which when combined with our custom Atomos-built backlight allows the power of 1500nits to be utilized for High Bright Rec709 or HDR PQ/HLG at 10+ stops. The full-size HDMI 2.0 connection bypasses the camera’s internal limitations by recording to 4Kp60 4:2:2 10-bit pristine video in grading-friendly Apple ProRes or Avid DNxHR. The Ninja Inferno upgrades mirrorless and DSLR camera audio by including balanced XLR input and 48V Phantom Power, negating the need to purchase separate audio recorders. For on set review, the wide angle 7” calibrated screen, playback controls, playlist and XML tagging make the Ninja Inferno the perfect client or director’s monitor, with playout to the latest HDR PQ/HLG or SDR TV’s. The Ninja Inferno is equally adept in the editing suite as it is in the field with the recorded files dropping directly onto the timeline of all the major NLE editing and grading software with the HDMI input capable of accepting HDR signals to make the Ninja Inferno an unbelievably affordable HDR reference monitor for portable or in studio color grading.

    The Ninja Inferno, which is shipping now for MSRP $995, is the ultimate camera accessory for the GH5, the popular Sony FS7 or cameras with 4K DCI output & other 4Kp60 / 4Kp30 / HDp60 cameras looking for a future proof monitor-recorder.

    HDR now comes free across the Atomos 4K Line-up

    Timed with the release of the Ninja Inferno, Atomos have driven down the price of the existing line-up, passing on the volume savings they receive due to the popularity of the entire HDR range. The Shogun Flame and Ninja Flame are now $995 and $795 respectively (both models ship with mains power supply, recording caddy & travel case. The Shogun Flame also ships with an XLR breakout cable). To complement all models in the line-up, Atomos have developed a tailored Accessory Kit and Power Kit that arm users with everything needed to power, control, dock, charge and safely carry the units at an amazing price. The flagship Shogun Inferno continues to ship as is today.

    Making 10Gbit Network using SFP+ Adapters, for cheap Mon, 21 Jan 2019 12:50:29 -0700 Vitaliy_Kiselev 21364@/talks/discussions Note - it is preferable way to make small network, but you also can check if you prefer or want to know about way to use usual twisted pair cables.


    $17 adapters, note that they require are PCIe v2.0 x8, so can use 8 lines and this could be quite bad, as on many MB's second PCI-E x16 slots are x4 only. Yet such single port adapters work perfect in x16 slots where only 4 lines are available in reality. So, do not worry about this.

    You also need direct SFP+ DAC cable, it is plenty of such cables at 1-3m, but 5m cables are much more rare and expensive.


    If you need to go longer than 5m you will need optical patch cord

    So, need pair of these (850nm 300m SFP+), they are around $16 each


    And after this need to get optical duplex multi-mode patch itself, note that they can be OM2, OM3 and OM4

    • OM2 has 82m maximum distance for 10GBASE-SR
    • OM3 has 300m maximum distance for 10GBASE-SR
    • OM4 has 400m maximum distance for 10GBASE-SR

    So, in out local home reality anyone of them will do.

    Note that both optical patch cord and SFP modules


    Ryzen Plus, 2nd generation CPUs for Video Editing Sat, 03 Mar 2018 05:41:34 -0700 Vitaliy_Kiselev 19121@/talks/discussions image

    So far data are as follows:

    • Models, advanced performance
      • Ryzen 7 2700X (3700/4300)
      • Ryzen 7 2700 (3200/4100)
    • Models, mainstream
      • Ryzen 5 2600X (3600/4250)
      • Ryzen 5 2600 (3400/3900)
    • Average performance premium will be at 10-15%, closer to 10%
    • All CPU will still require expensive fast DDR4 memory
    • Announcement around April
    • Availability - April, May
    • First they try to push more premium models
    • Will be compatible with existing AM4 motherboards
    • Top two R7 models will have issues with cheap motherboards due to power
    • Available at
    Xiaomi Mi Air, same as Apple but cheaper Wed, 27 Jul 2016 10:20:11 -0600 Vitaliy_Kiselev 15427@/talks/discussions


    • 12.5" model is $525 Core M3/ 4GB RAM/ 128GB SSD/ USB 3.0 and HDMI ports + USB-C port, 11.5 hours battery
    • 13.3" model is $750, Core i5-6200U/GeForce 940MX/8GB RAM/256GB SSD, 40Wh battery, 0.6" thick, 2.8 pounds
    What is wrong with Intel discrete GPU? Fri, 22 Mar 2019 00:41:32 -0600 Vitaliy_Kiselev 21762@/talks/discussions image


    Intel posted first images of their discrete GPU.

    Lot of industry press post various bullshit on how competitive it will be and such.

    In reality here we see 75-120W card with worst possible cooling, obviously made for multi GPU configurations.

    Real intended market for this card will be CAD, 10-14bit color editing and similar applications.

    GPU itself won't be really powerful.

    Whole project is more like a con to distract public from full failure with moving to real 10nm and 7nm.

    DRAM selection for Video Editors Thu, 21 Mar 2019 03:50:16 -0600 Vitaliy_Kiselev 21756@/talks/discussions Introductory note

    Memory is most blatant ripoff among all products related to computers.

    All, 100% of so called "gamers" or "overclockers" memory is based on same 2133Mhz or 2400Mhz chips as cheap DIMMS.
    Higher frequency chips are just selected among specific manufacturing batches aka dies. And sometimes not even tested properly (to save funds).
    For manufacturer main expenses for such kits lies in the bigger competition for select chips (can be up to $10 extra for 8GB DIMM), around $1-3 they spend on fancy alu heatsinks and $1-5 they spend on more colorful packaging. All else goes to pure profits, marketing expenses (can be large for small manufacturer), distribution and retail parts.

    Yet for many modern CPUs memory speed and timings greatly affect overall performance. And with each year such dependency increases due to lack of real progress in DRAM technologies. You can thank big patent troll named Rambus for lot of today issues.

    Keyboards Mon, 23 Apr 2012 10:00:15 -0600 Vitaliy_Kiselev 2982@/talks/discussions While in camera world we have clear progress year after year, in keyboard business things in mass market are going in reverse.

    If you get IBM PS/2 keyboard from 1991 and after working on it you go to your shop and try various keyboards you'll be in shock. Starting from $5-10 crap invented only to type up to 140 symbols a day (makes you understand twitter popularity), to pricey junk "space ships" designed to run video player.

    And gaming keyboards. This is long story. Not only you must send all your time down the pipes, but you must do it on cool keyboards. I am not even start the story of motherfuckers who place extra keys in the bottom row, more and more. Inventor of Windows keys (and Fn keys on notebooks) must be found and executed in public using some very paintful way.

    This was few thoughts I got after looking at keyboard market and getting Razor BlackWidow (not big choice of localized mechanical stuff is available really).


    This is mechanical keyboard based on Cherry MX Blue switches

    Razor keyboard is very good example of modern "inventors".

    1. Key size is slightly reduced compared to normal keyboards (whole main block is smaller than normal keyboard).
    2. Typeface used for keys is just awful, not major, really, if you type constantly, but anyway.
    3. As this is "gamers keyboard" it has macro keys that are on the left and placed in such distance that makes harder intuitive use of left Ctrl.
    4. It is glossy and keys are made from quite cheap plastic (if you compare to IBM keyboards)

    But overall, of couse it can't be compared to rubber dome crap, even good one as some Microsoft keyboards.

    It not have ideal main key block layout like some keyboards:

    As Enter is still small.

    May be in future we'll see something ideal, like IBM keyboards, but with larger bottom row, no widows keys and with buckling spring or mech switches options.

    Available at:

    Note: You can get older (not 2013) version, it is cheaper but absolutely the same from practical standpoint

    Intel LGA1151 Z170, Z270, Z370 and Z390 Motherboard Selection for Video Editors Wed, 06 Feb 2019 16:18:48 -0700 Vitaliy_Kiselev 21493@/talks/discussions Chipsets general information.

    Chipset diagrams and PCie lines limits





    Almost no change, but now it is 24 PCIe 3.0 lines go from chipset. 4 more than previous.



    All same as Z270, just support for newer CPUs.



    Only significant changes are USB 3.1 Gen2 ports supported by chipset and also support for additional WiFi and Bluetooth.

    DMI 3.0, released in August 2015, allows the 8 GT/s transfer rate per lane, for a total of four lanes and 3.93 GB/s for the CPU–PCH link.

    In August 2007, PCI-SIG announced that PCI Express 3.0 would carry a bit rate of 8 gigatransfers per second (GT/s)

    So DMI 3.0 is PCIe 3.0 4x. And all this nice looking premium MB's share same actual 20x PCIe 3.0 lines.

    Hardware advice for laptop editing with DaVinci... Wed, 13 Mar 2019 05:21:05 -0600 FFrank 21712@/talks/discussions Hi, I am a quiet reader of this great forum. My name is Fabian, I am from Germany. I work in the classical music business as my main job. More and more we use our audio productions to film something for later use. Up to now I edited in Lightworks. I got DaVinci now and like it quite a lot.

    Here a little explanation what I do: We film on a GH1 (Hacked), GH3 and GH5. The GH5 is used in 4k 10 bit. Output is HD. The shots of the GH5 are quite often used to mimic more cameras (crop in) and to mimic a slider.

    Up to now I use a Lenovo W541 (i7-4910MQ, 16GB RAM, Quadro K2100M) All data on internal SSD (Ultrabay) seperate from OS). It is really hard to work with this PC and the 4k material of the GH5.

    I am thinking of upgrading to an X1 Extreme (i7-8750H, 16GB RAM, GeForce GTX 1050 Ti 4 GB, M.2 SSD)

    I want to stick with Lenovo. We use quite special Multichannel Audio interfaces (RME Madiface XT). We had some problems with other brands. Since years we stick to Lenovo and never had problems. So this will not change. I am not interested to get a seperate Laptop just for video work.

    The question is if the update will speed up things considerable?

    Thanks for your input about this.

    Best. Fabian

    Threadripper 3rd Gen CPUs can have 64 cores model Fri, 08 Mar 2019 15:09:20 -0700 Vitaliy_Kiselev 21683@/talks/discussions

    AMD Threadripper 1st Gen 16-core CPUs Wed, 17 May 2017 02:42:14 -0600 Vitaliy_Kiselev 16950@/talks/discussions

    Consumer CPU sockets design embarassment Wed, 06 Mar 2019 11:56:09 -0700 Vitaliy_Kiselev 21674@/talks/discussions Standard Intel socket design


    On the back it looks like


    Issue with it is that cooler mount is just 4 bare holes in motherboard - totally unacceptable solution for anything besides stock cooler if you tray to use them as they are. As motherboard will bend.

    So any good cooler manufacturer ship you their own extra backplate and mounting hardware.



    Typical accessories set


    This should not be the case. each motherboard must have proper backplate suitable for any cooler.

    Intel LGA 2066 x299 HEDT Motherboard Selection Guide for Video Editors Sat, 09 Feb 2019 20:39:27 -0700 Vitaliy_Kiselev 21510@/talks/discussions Reserved, update soon.

    Now filling all boards lists with data.

    X299 chipset diagram


    If you look at this you see quite underwhelming stuff, it is still much better than AMD chipset as provides 24 PCIe 3.0 lines.
    Link to CPU is still same slow DMI 3.0 (PCI 3.0 x4 total only).
    But other than extra 2 SATA ports it is identical in every way to consumer Z270-Z370 chipsets.
    Can check yourself at

    Another nice case for editing build Mon, 04 Mar 2019 16:58:24 -0700 Vitaliy_Kiselev 21667@/talks/discussions

    This thing can easy take two 360mm radiators in addition to your HEDT build with multiple GPUs :-)

    And also good for cooling back of VRM due to special air guide.

    In EU they are cheaper, btw.

    Personally recently saw such build and with good fans it is very silent with outstanding airflow.


    PCIe 5.0 coming very soon with 4x speed, Apple can be first to use it Thu, 17 Jan 2019 20:39:23 -0700 Vitaliy_Kiselev 21334@/talks/discussions Such situation happened due to extreme delay with PCIe 4.0, and it will be only upcoming AMD 3000 series CPUs that will befirst to implement such standard (even on older motherboards some slots will start to work in it, same as it happened with HDMI after 2200G/2400G introduction).

    Rumors in industry are that Apple aims to use PCIe 5.0 in all upcoming 8/16 cores ARM CPUs made for their upcoming iOS based notebooks lines. Of course Thunderbolt via USB-C ports will also greatly benefit from this change with corresponding speed increases.





    Motherboard VRM Power Guide Mon, 28 Jan 2019 12:48:40 -0700 Vitaliy_Kiselev 21417@/talks/discussions From sinhardware, copied from WBMachine

    To begin talking about voltage regulators, and since this article is aimed at those without strong engineering backgrounds, we first will need to define certain terms which pertain to this article. The terms and definitions explain every part of the VRM and really will help, so please glance over them, because you will be wondering what the difference between the high-side and low-side MOSFETs are, and you need to read the definition of each term for things to make sense. You are basically getting a crash course in power supply design at a level that anyone who is interested can understand. So before the definitions I will give a quick analogy of how a motherboard VRM works.


    The water faucet analogy is slightly imperfect, however valid in many ways. Think about the process it takes for getting water out of your facet; the water has to be clean, at a decent pressure, and it needs to come in any amount you need it to. The power will be the water in this analogy. To produce the water in your faucet, water has to be controlled from a large source, cleaned, and then put into pipes and pressurized to reach your home. A CPU needs power like we need water, and the source for us might be a large lake, but from the CPU the source is your computer’s main AC/DC PSU(power supply). The water for us is then routed to a water treatment center, and that is basically what a VRM does. The water then needs to be pressurized and cleaned, that is basically what the phases do. The MOSFETs act like pumps, and the drivers are their controlling the pumps (MOSFETs) like valves (drivers). The inductors then store and clean the water like a purification tank, then all the purification tanks (inductors) send their water straight to the holding tank(capacitors) or straight to the city to people’s faucets. The PWM is the main control and the drivers (valves) are controlled by the PWM.


    VRM: Voltage regulator module, this term refers to anything from a linear regulator to a synchronous multiphase buck converter, which is a switch mode power supply, which is what your motherboard's CPU VRM is. People also call the VRM the PWM, which isn't correct, PWM refers to a modulation scheme or a chip, not the entire circuit, however since PWM has a catchy ring to it people still refer to the VRM as the PWM. Some others may also call the VRM a VR or a VRC(voltage regulator circuit).

    PWM: Pulse Width Modulation or Modulator, this is a scheme where phases are turned on and off in a pulse like manner, it can also refer to the control chip of the VRM. The PWM control chip does everything from turn on phases to monitoring different characteristics of the VRM, the PWM is the only part of a VRM that could be considered digital in nature, however it is possible to design the PWM with analog mechanisms(which is quite easy and popular).

    Duty Cycle: The duty cycle is a ratio of Vout divided by Vin, so if there is a 12v input and a 1.2v output then the duty cycle is 0.1 or 10%, the duty cycle determines how long the high-side MOSFET needs to be on, and in this case it is 10% of the time to get 1.2v output. The duty cycle determines how often the high-side switches while the switching frequency determines how often it switches.

    Switching frequency: This is the frequency at which the VRM switches or pulses. Increased switching frequency means that the current will move more quickly throughout the VRM, however while increased switching frequency helps with transient response and helps to decrease ripple, it also reduces efficiency and increases temperature. With a low duty cycle the switching frequency is also limited. The switching frequency determines how often the phases switch or pulse. So if the switching frequency is 300khz then the phases pulse 300,000 times per second or pulses once every 3.33 microseconds(usec) or 3.33e-6 seconds. Switching frequency also needs to be constant along phases, so if you double the phase count you should also cut the frequency in half for each of the doubled phases, if you don't do this, then the entire effective switching frequency of the entire VRM can double and lead to issues unless already accounted for.  

    MOSFET: Metal Oxide Semiconductor Field Effect Transistor, basically a simple switch which can turn on (connect the source and drain) if a voltage is supplied to the gate. There are usually 3 points to a MOSFET, the gate which is used to control the MOSFET, the drain which is where the current flows to, and the source which is connected to the source of the current. A MOSFET is basically a switch/electronic valve. This is easy to think about, when a certain voltage is supplied to the gate, the source and drain are then connected for current to flow freely. By the way FET is MOSFET for short.

    High-Side MOSFET: This MOSFET has its source connected to an input, usually 12v in modern VRMs, and its drain is connected to the inductor / source of the low-side MOSFET. The driver controls its gate. The high-side MOSFET's switching losses are very high as it will be pulsed very quickly. When a phase is ON, then the high-side MOSFET is also on. The duty cycle determines how long the high-side MOSFET stays on. The high-side MOSFET limits the current output of the phase. High-side MOSFET is also called the Control MOSFET.

    Low-Side MOSFET: This MOSFET has its source at the inductor / the high-side's drain, the low-side's drain is connected to the ground. This MOSFET is in charge of turning on when the phase is off, and it completes the circuit and allows the inductor to discharge all of its current. The conduction losses of the low-side MOSFET are very important as this MOSFET will stay on longer than the high-side. The low-side MOSFET is also sometimes called the synchronous (or sync) MOSFET.

    Inductor: Also known as choke, this is an energy storage/filter component. It is made up of a thick coiled wire either surrounding and/or surrounded by some metal casing. This is probably the most recognizable part of a VRM, as it is the metal cube each phase has. The inductor stores energy in a magnetic field. The inductor is the ultimate limiter of the output current of each phase, the saturation current is the maximum current that the inductor can sustain. 

    Capacitor: Most people know what a capacitor is; it is a sheet of thin metal put up right next to another sheet with a di-electric in between, then the sheets are wound into a circle and they are cased in metal. The capacitor stores energy in an electric field opposed to the magnetic field the inductor uses. Electric and magnetic fields are related by the way.

    Driver: In a VRM a driver isn't the dude who drives you around in a limo, but instead it is a chip which controls the MOSFETs in each phase. The driver is controlled by the PWM and is an integral part of the system.

    Doubler: We will talk about the doubler a little as they are commonly used today in the phase wars. They basically are like a multiplexer which takes a single PWM signal and divides that signal into two, however it also reduces the maximum switching frequency by half. There are also some quadrouplers, these are interesting as I have only seen one which is in production(IR3599) and it takes a single input and basically divides it into 4 by dividing into 2 twice, and you get an output which is ¼ the switching frequency of the input. Nowadays we see single doubler chips, or we see them integrated into the driver, however in the past sometimes motherboard makers used analog switches, which would take in 4 PWM signals and output 8. The only place you see this done now is with some X58/Z77/Z68 MSI motherboards.

    AMD AM4 Motherboards Selection Guide for Video Editors Sat, 26 Jan 2019 15:19:23 -0700 Vitaliy_Kiselev 21405@/talks/discussions Topic solely for selection of motherboard for your AM4 Ryzen CPU based system.

    Focused on video editor needs

    I'll be adding systematic info post by post.

    Ideal modern video editor motherboard must allow:

    • Work with overclocked 8 core CPUs fine without VRM issues, preferably be ready for upcoming 16 core chips
    • Have ability to install pair of NVMe x4 SSD drives (one can be using PCIe 2.0), M.2 slot not located under GPU hot air is big plus!
    • Have pair of USB 3.1 Gen2 10Mbit ports so you can transfer data from/to your fast SSD quick - check more . Front panel connector is also big plus.
    • Have or allow to install 10Gbit Ethernet/56Gbit Infiniband network adapter to quickly use directly or dump large amount of footage at NAS/Server.
    • Have proper slots alignment taking in account that some good GPUs have 2.5 slot sized cooling.
    • Installing 2nd GPU always leads to lot of compromises on this platform, but if this is performance bottleneck - go for it.

    CPU info and limits

    You are searching board for Ryzen 2700/2700X or at least 1700/1700X/1800X, it is not much reason to look for other CPUs.

    Ryzen is gaming/consumer CPU with serious IO shortcomings by design (but less serious compared to Intel consumer line).

    • Ryzen chips have 24 PCIe v3.0 lines.
    • 4x goes to NVMe slot of board (Intel lacks this).
    • 16x go to GPU - and this one on A320 and B350/450 can't be split (aka bifurcation), to force MB makers to buy more expensive chipsets for SLI.
    • 4x is left for the chipset (on Intel it is same). Chipset uses them for lot of things, including making multiple PCIe 2.0 lines.

    Note Actual Ryzen die has full 32 PCIe 3.0 lines, but it had been decided that it will be too nice to allow consumer PCs to use them all. References that somehow AMD does not have free pins in socket is absolute bullshit.


    Note! Ryzen 2200G or 2400G are designed such way that they provide only 8 PCIe 3.0 lines to GPU instead of 16x and they can't be split.
    So, forget about idea of using them for any advanced tasks.


    Chipset difference


    If you look carefully you understand that you must avoid B350/B450 chipsets at all cost, not mentioning A320.

    • First reason - they do not allow to split x16 into two PCIe x8 slots, this is very bad for us* (see note below).
    • Second reason - they have less general purpose PCIe 2.0 lines, 2 less sounds like not much, but it is very important on our limited consumer CPU IO budget.

    Note about bifurcation/split. As usual in capitalism - it is artificially removed and disabled feature. On Asrock ITX B350/B450 boards such options is present and works. It had been done due to large request from users/buyers and some other companies do this (keeping silence so it won't become open knowledge among too many, yet you still need to modify BIOS to enable SLI). But even with such options it is horrible life as you need custom impossible to find riser and turning GPU card into vertical state or such.


    SSD performance limits on Ryzen

    Second M.2 slot on almost all boards where it is present will be using PCIe 2.0 x2 or x4 mode.

    PCIe 2.0 per-lane throughput is 5GT/s or 500MB/s of actual data transfer per lane. x2 will be capped at 1GB/sec recording/reading and x4 at 2GB/sec recording/reading, no matter if the limit of SSD you put in it is higher.

    First M.2 slot uses four dedicated v3.0 lines. Single PCIe 3.0 lane at 8GT/s, can send 985MB/s. This limit is close to 4GB/sec.

    Network stuff

    Ideally we want 10Gbit adapter, but most probably you will need free x4 slot for one - check

    Among 1Gbit always aim for Intel, it is not much difference but saves little CPU load


    PSU, Bureaucrats, Engineers and PCIE connectors Mon, 04 Feb 2019 21:30:17 -0700 Vitaliy_Kiselev 21480@/talks/discussions image

    Look at PCIe connectors pinout, it is very interesting thingy.

    As its origins can tell you a lot about committee, bureaucrats who are present in them and highly specialized engineers who are forced to go around stupid decisions.

    Bureaucrats reversed wires assignment compared to ATX CPU connector, in absolutely stupid attempt to provide reason why they must be paid for their work.

    During design bureaucrats realized that many capitalist manufacturers will put crap thin wires in their PSU for PCIE power delivery. Proper sane man will work with ATX standard and set strict specifications to always use 3 wires for 12V 6 pin connector (and 4 for 8 pin one) and 3 wires for ground, copper ones and no smaller than specified gauge. But no.

    Decision looked smart for bureaucrats but in reality it is utter stupid. They added special sense wire so properly designed PSU will sense actual voltage drop across the crappy wires and adjust +12V going only to this connector to compensate for this drop.

    Well, at first. It is cheap crappy power supplies that save each cent and use thin alu wires. They won't do extremely advanced implementation you want from them. And expensive power suppliers with good thick wires do not need it much.

    Second. It requires separate step up DC-DC regulator for each PCIE connector inside PSU. It is around 20x more expensive than to use good wires. I am not even talking that none of standard IC for PSUs have support for such features or that it is not much space inside PSU for all this shit.

    Third. GPU manufacturers are also not stupid and know that they can't rely on top quality +12V values at mass market cheap PSU, so they try to design their power stages with good margin or voltage drop.

    Perfect example of people who got lot of money, wasted lot of time and instead of simple copy of ATX CPU connector induced problems no one asked for.

    It is all something like this one Youtube sketch, just in real task:

    AMD TR2 x399 HEDT Motherboard Selection Guide for Video Editors Sun, 10 Feb 2019 00:59:31 -0700 Vitaliy_Kiselev 21511@/talks/discussions Reserved, update soon.

    Now filling all boards lists with data.

    X399 chipset diagram


    If you look at this you will see how mighty is CPU, but how shitty is ASMedia made chipset.

    In reality it is same features and restrictions chipset as consumer X370 one.

    In reality we can have exactly same die used for A320/B350/X370/X399 chipsets.

    Comparison of TR2 platform to consumer, Ryzen one


    Alldocube X tablet with superb Samsung AMOLED display Thu, 27 Dec 2018 11:11:17 -0700 Vitaliy_Kiselev 21214@/talks/discussions

    Equipped with the most advanced 10.5-inch WQXGA (2560×1600, 16:10) 2K Samsung Super AMOLED display, Alldocube X delivers more than 105% of NTSC color coverage and has a remarkable 100000:1 contrast ratio, providing richer colors and more realistic images. Moreover, it also has a range of advantages compared to other non-AMOLED displays, such as: rapid response, lower power dissipation, better transmittance and so on.

    • $219 preorder, up to $259 on sale

    Order link -

    Product info -

    Galaxy Tab S5e - nice OLED screen tablet Sat, 16 Feb 2019 18:56:25 -0700 Vitaliy_Kiselev 21561@/talks/discussions

    • 10.5 inches AMOLED 1600 x 2560 pixels, 16:10 ratio screen
    • Qualcomm SDM670 Snapdragon 670
    • 4GB RAM+64GB NAND
    • MicroSD support up to 512GB
    • 13Mp main camera + 8Mp front one
    • USB Type C 3.1 port
    • Has adapter for headphones
    • Wi-Fi 802.11 a/b/g/n/ac 2.4Ghz+5Ghz, Bluetooth v5.0
    • Android 9.0
    • UHD 4K (3840x2160) @ 30fps video record
    • Can play UHD 4K (3840x2160) @ 60fps in HEVC and H.264
    • 7 040mAh battery
    • 4 speakers
    • 245 x 160 x 5,5mm
    • 400g
    • $399
    GPUs after mining, what to look for? Tue, 04 Dec 2018 05:03:11 -0700 Vitaliy_Kiselev 21044@/talks/discussions It is good time as GPU based mining became unprofitable now


    So, what models to look for on used market if you plan to use it in video editing?

    First. Most frequent used cards in mining are - AMD RX570 (and RX470) 4GB/8GB, AMD RX580 (and RX480) 8GB, NVidia GTX 1060 3GB, NVidia GTX 1060 6GB.

    All of them are very good in editing.

    Note! Mining do not do anything horrible with the cards if rig had been maintained properly, do not fall for horror stories.


    Second. Issues to look for:

    Fans. Make sure to test fans at all speeds, at cold state and after warming. Lot of modern GPU fans are not too good after prolonged work.

    You can also look for card with silent fan mode, where fan stops under low load (it is around 80-90% of editing work time).

    Thermal pad leaks. Famous issue of some cards, looks like oily areas, or just slightly oily looking board parts


    Contrary to this photo, it is usually located under cooler close to RAM or VRM area, and you can miss some of it. Such thing appear due to vertical position of the card in most mining rigs contrary to horizontal position in almost every computer case. Thing that is leaking is dielectric, so nothing bad must be happening.

    If card works good, and discount is big, plus you are able to replace thermal pads you can buy such card.

    Card under load. Use and to check card under load for at least 30 minutes, it must not be crashes or visual artifacts, same as abnormally high temperatures. Can also check card model using

    Third. Cards to prefer - AMD RX580 8GB, NVidia GTX 1060 6GB, GTX 1070 Ti 8GB, GTX 1080 Ti 11Gb

    Try to buy more powerful card with more memory. Video software, especially Davinci Resolve or advanced plugins is GPU memory hungry and become more so with each new release.

    Mac/Hackintosh guys. Many Mac users buy AMD cards as external ones with special Thunderbolt case, yet it has lot of issues, check good articles and videos first. It is still way cheaper than pay for BM external solutions.

    GTX 10xx series had good drivers and supported by recent MacOS versions (but Nvidia Drivers for Mojave 10.14 Not Available!). Just make sure to check Hackintosh special resources before doing anything.

    If you are on super tight budged - your choices are good 1050 Ti 4GB models, GTX 1060 3GB and RX570 4GB (can be usually found for $120-150 used).

    Cooling to prefer

    Avoid so called turbine coolers on cards


    Lower end cards are fine with just good large two coolers.

    Best under moderate and low load are usually three cooler long cards (as they have bigger dissipation area and lower coolers speed)


    Can check ASUS Strix line for such.

    Fourth. Warranty. Many cards still have 2-3 year of warrant left, so you can buy such for more safety. In many countries outside US/EU you can see cheaper cards with no local warranty at all as they had been shipped from US/EU. If discount is big and seller provide his own small warranty you can try to risk.

    Last. Newest RTX 20xx and AMD RX 590 cards provide very little for video editing and is considered non optimal generation due to little progress and price hikes. Most advantage is in very heavy tasks and usage of RTX 2080 Ti. So, for almost anything, including advanced grading you will be good using older card.

    Note. Usually local sellers provide best deals and it is possible to check card, contrary to ebay. Check your country most popular C2C platform to buy used stuff.