This is very short and on point guide for selecting ATX board for your Threadripper build.
TRX40 chipset diagram
AMD moved to PCIe 4.0, almost ell else is downgrade from x399, for example it removes 4 PCIe lines going directly from CPU to SSD and reroute them to chipset.
It is ZERO reason to put 8 PCIe lines (and they are v4.0!) to such bad chipset and with CPU having so much PCIe lines by itself.
If you look at this you will see how mighty is CPU, but how shitty is AMD TRX40 chipset.
In reality it is even less features and more restrictions than consumer X570 one. But this allows AMD to get huge profits,
Processors we are looking for
Both 1st and 2nd gen Threadripper CPUs are not compatible to new chipset, it is made intentionally to reduce Threadripper sales, as AMD is not interested to sell you CPU at all - they better sell EPYC.
Prices are also extremely high for very low manufacturing cost.
Ryzen Threadripper, 3rd gen
All CPU models above have:
DDR4 DRAM
Will add selecting guide soon.
Temperatures
Lot of TRX40 boards run extremely hot if you use overclocking, especially for 48/64 core CPUs.
Main reason for this is fewer and simpler and cheaper VRM and also bad heatsinks being just slab of aluminium made be designer without any fine fins.
Heatsink designs
In present day it is frequently designers who make heatsinks even for HEDT motherboards.
They are made for looks, and not to be efficient in their real function.
More coming soon.
Reserved.
List of all TRX40, TRX80 ATX sized motherboards
Red - something not good or missing feature.
Blue means - ok or average.
Teal - above average.
Green - really good for us.
ASRock
ASUS
Added photos and product links for all released boards.
Full marked specs will be added soon.
Notice how PCEe x16 slots are located for all except few boards - it is done to prevent competition with higher end boards coming (do not allow installation of 4 GPUs or larger cards).
Prices
ASUS ROG Zenith II Extreme Alpha
16-phase CPU VRM with Infineon TDA21490 power-stages (90A), instead of TDA21472 (70A) power-stages on the original ROG Zenith II Extreme.
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