AMD Ryzen Threadripper 7980X & 7970X Review: Revived HEDT Brings More Cores of Zen 4

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• tamalero - Tuesday, December 5, 2023 - link

  One of the most common issues of AMD is sketchy performance and stability with non samsung chips.
  If you ram had hynix or similar chips..it would usually not post at the advertised max speed.
  
  As soon I moved to Samsung chips in all my AMD builds, all problems went away.

• JRF68 - Tuesday, December 12, 2023 - link

  Just unlucky. Should RMA the mb. Asus imho, is still the best for HEDT whether AMD or Intel.

• clsmithj - Sunday, December 31, 2023 - link

  I have a 3960X Threadripper on a MSI TRX40 Creator, and a 2990WX Threadripper on a MSI X399 MEG Creation board.
  Both system use 4 sticks of Kingston 64GB (16GB x 4) DDR4 3200 dual rank memory (HyperX Predaor/Fury) that worked fine at their C16 3200 MT XMP rate.
  I used DRAM Calc app and managed to get the RAM of my 3960X to run stable at gear 1 C16 3800 MT with UCLK=MCLK set 1900Mhz.
  The ZEN2 CPU is definitely capable of this high memory OC. I've watch Buildzoid clips of him showing how with ZEN2 TR it can go even higher than 3800.
  My ZEN+ 2990WX I have running at Gear 1 C16 DDR4-3466 speed, and I checked ZenTimings that revealed its UCLK=MCLK is at 1733Mhz.
  The high memory clocking is doable you do need a good motherboard, but I always observed the TRX40 boards having a fast amount of decent boards with high amount of VRM phases.
  It was the X399 boards that only had a total of two good boards, which was either the MSI MEG Creation or the ASUS ROG Zenith Extreme.

• thestryker - Monday, November 20, 2023 - link

  Where have you seen JEDEC compliant 6400 RDIMMs? The highest I've seen is 5600.

• Rοb - Wednesday, November 29, 2023 - link

  Here: https://www.anandtech.com/show/18988/teamgroup-unv... and https://www.anandtech.com/show/21129/micron-introd...

• demu - Monday, November 20, 2023 - link

  I was able to run my 3960X with G.Skill Trident Neo 4x16GB 3600CL16 (B-die) at 3600CL14 and/or 3766 CL16 (Asus ROG Strix TRX40-E Gaming) for weeks without any problems.
  
  Broke down the processor about two months ago. Touched accidentally USB-A -port with an USB-C -cable and the processor no longer booted (or booted and went trough all but the last POST test and then stuck - tried two different MB) :(
  Put all components into a new 5800X3D system and got 4x16GB memory to work @3600CL16.
  
  Now considering the new 7960X.

• Makaveli - Monday, November 20, 2023 - link

  So looks like the difference between your system Demu and Teamswitcher is you paired it with high-quality memory.
  
  Which is no surprise and it's why I never go cheap on memory.

• meacupla - Monday, November 20, 2023 - link

  It's not about cheap or expensive, it's if you got Samsung B-die or not.
  
  I have G.Skill F4-3600C18-16GVK, and it only works at 3200 CL18. Why? because I was told it would be Samsung B-die, but it turned out to be SK Hynix, and the AM4 platform doesn't like working with anything other than Samsung B-die.

• Makaveli - Monday, November 20, 2023 - link

  I have B-die and that is what I'm talking about when I said don't buy cheap memory. B-die = expensive but you get what you pay for and it just works. And you should have done your own research I would have caught the memory was Hynix before purchase.

• meacupla - Monday, November 20, 2023 - link

  That's the thing though, I did do my research.