AMD Zen 2 aka Ryzen 3000 CPUs details

Vitaliy_Kiselev

On different way to cool this CPUs

https://adoredtv.com/ryzen-3000-thermal-analysis-what-can-cool-a-3700x-the-best-and-why/

Vitaliy_Kiselev

Chiplet under microscope

https://www.flickr.com/photos/130561288@N04/49046159127/

Vitaliy_Kiselev

3950X frequency drop

Actual energy efficiency not much better than 12nm Threadripper in Cinebench

As predicted Premiere is improving fast in handling multithreaded processors with >8 cores

Encoding is better mostly because of additional FPU units

Vitaliy_Kiselev

Looking at reviews you see very hard hand of AMD, as maximally pushed are benchmarks and apps that do not require much memory performance and instead require maximal load on floating point operations, but preferably without much AVX2 (as CPU drops speed like mad in this mode).

Of course, AMD also recommended that memory to use - preferable DDR4 3600 CL14 or better set (can be from 50 to 250% more than price of usual 3200 CL16 set).

Vitaliy_Kiselev

Boost frequency of the Zen 2 processors is very dependent on temperature.

AMD calculated their rated boost clocks at 50°C die temperature.

Depending on the processor, maximum boost will go down with temperature:

3900/3950 - 75 MHz per 10°C

3800/3700 - 50 MHz per 10°C

3600/3500 - 35 MHz per 10°C

Firworks

I managed to snag one of the 3950X on launch day and replaced my previous 2700X. Something I was not expecting to find in upgrading was that my GTX1080 cannot keep up with it on 4K BRAW timeline render to H264 in Resolve with mild grading. During a render it fully loads around 20-24 CPU threads with the GPU bouncing off 100% load throughout. It's still nice to have the system be fully responsive and able to multi task during the render but that seems to be the limiting factor on my render speed now.

I'm running it on an Arctic Liquid Freezer II 240 AIO and it is very nice to have replaced the jet engine that used to sit beside me ramping up and down all day long (Wraith Prism).

Vitaliy_Kiselev

@Firworks

Now need to get pair of 2080 Ti, or used 1080 Ti's :-)

Vitaliy_Kiselev

Ryzen 3800X, made from two defective chiplets

Vitaliy_Kiselev

AMD Ryzen 7 3800X for $339 deal

https://www.amazon.com/AMD-Ryzen-3800X-16-Thread-Processor/dp/B07SXMZLPJ/

Vitaliy_Kiselev

AMD Ryzen 7 3700X 8-Core, 16-Thread, $325 deal

https://www.amazon.com/dp/B07SXMZLPK

AMD Ryzen 5 3600X 6-Core, 12-Thread, $209 deal

https://www.amazon.com/dp/B07SQBFN2D

Vitaliy_Kiselev

AMD Ryzen 3rd Generation CPU Deals:

DrDave

Any disadvantage to using a 3950x with an older mb?

Vitaliy_Kiselev

@DrDave

No, if VRM is good. And you do not somehow want PCIe 4.0.

MikeLinn

Vitaliy_Kiselev

Nice progress

Vitaliy_Kiselev

https://www.newegg.com

Vitaliy_Kiselev

AMD Ryzen 9 3900X 12-core, 24-Thread Unlocked Desktop Processor with Wraith Prism LED Cooler, $419

https://www.amazon.com/dp/B07SXMZLP9

Vitaliy_Kiselev

New cheap CPUs - AMD Ryzen 3 3100 and AMD Ryzen 3 3300X

Vitaliy_Kiselev

More on difference between last two chips

Around 95% of chips will be perfectly good 8 core chips, but with half of cores disabled by AMD (as they can't sell you 8 core for $99 without people realising that actual cost of 8 core chips are below $30).

Vitaliy_Kiselev

Vitaliy_Kiselev

Korea sales compared to Intel

Vitaliy_Kiselev

AMD is working on new Ryzen 3000 Desktop CPUs

AMD Ryzen 9 3900XT (Ryzen 9 3900X Replacement)
AMD Ryzen 7 3800XT (Ryzen 7 3800X Replacement)
AMD Ryzen 5 3600XT (Ryzen 5 3600X Replacement)

CPUs wil more to slightly more advanced TSMC process (but still 7nm).

Could work at 200-300Mhz more during sustaining load, TDP will not change or will be up slightly.

Prices will be same as original CPUs without T, while older CPUs will drop around 15%.

Vitaliy_Kiselev

XT processors will be announced at June 16th and available since July 7th.

Vitaliy_Kiselev

Vitaliy_Kiselev

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