Hey all,

Could you tell me what RAM you've successfully gotten to work with the x399 Fatal1ty in 128GB mode configuration (8x16GB)?

I've tried this:    https://www.newegg.com/Product/Product.aspx?Item=N82E16820233968

and something isn't working right (see here:   http://forum.asrock.com/forum_posts.asp?TID=6214&PID=37015&#37015)

At this point I'm going to just throw the RAM away or return it, and buy some new RAM ASAP and overnight it.

Could you guys please tell me what RAM in 128GB specifically is working for you on the Threadripper 1950x + x399 Fatal1ty motherboard?

Thanks!

ASRock_TSD:   Please tell me a memory that specifically works.

I used your QVL list and it does not work for the memory.  Please see here:  http://forum.asrock.com/forum_posts.asp?TID=6214&title=fatal1ty-x399-wont-post-with-128gb-ram

I did everything you said.  It does not work.  Please respond to that thread.




Edited by 128noGB - 30 Sep 2017 at 3:10am

I don't have real-time access to specific user configurations or updates beyond my last training cut-off in January 2022. Determining exact compatibility can be a bit tricky, especially with larger RAM configurations like 128GB (8x16GB), as it can depend on various factors including BIOS updates, RAM module revisions, and motherboard compatibility.

However, for the ASRock X399 Fatal1ty motherboard paired with the AMD Threadripper 1950x CPU, there might be specific RAM modules that users have reported as working well in such configurations. To find this information, I'd recommend checking:

ASRock's Official Support: Check ASRock's website or support documentation for the X399 Fatal1ty motherboard. Sometimes they provide a Qualified Vendor List (QVL) or memory compatibility list that details tested and verified RAM modules.

Community Forums: Visit forums or online communities where users discuss their builds and experiences. Websites like Reddit's /r/buildapc or various tech forums often have threads or discussions where users share their successful RAM configurations.

Recent User Reviews or Builds: Look for recent reviews or builds specifically mentioning the Threadripper 1950x and the ASRock X399 Fatal1ty motherboard. Users often detail their RAM choices and their experiences.

Manufacturer Recommendations: Some RAM manufacturers might suggest specific models or series designed for AMD platforms or high-capacity configurations. Checking their websites or contacting their support might yield some recommendations.

Remember that BIOS updates for the motherboard can also impact RAM compatibility. Ensure your motherboard has the latest BIOS version available, as it might include improvements for memory compatibility and stability.

Always cross-verify the information obtained from different sources to ensure reliability and compatibility before making a purchase, especially when dealing with high-capacity RAM configurations. However, you might consider checking local PC stores in Kolkata for their recommendations or insights into compatible RAM configurations for the ASRock X399 Fatal1ty motherboard and AMD Threadripper 1950x. They might have experience or suggestions based on customer feedback or their own testing.

Two DIMMs per channel is always harder on the memory controller.
And Zen1/Zen+ was particularly bad with this.

If I were you, I'd buy FOUR sticks of MTA18ASF4G72AZ-3G2R (Crucial DDR4-3200 Unbuffered ECC DIMM) and put one DIMM per channel, in DIMM slots furthest away from the CPU (per channel). These are all basic JEDEC DIMMs, so pretty much no compatibility worries. $81.30 a piece currently, which is pretty darn good in my opinion, although I've gotten them for as low as $74.76 each.

That's me personally. I basically don't buy non-ECC memory.

I used to run two of these on my X470 Phantom Gaming-ITX/ac, with R7-2700X.
They actually ran at 3200MT/s, but NB portion of the chip needed fairly high voltage and was burning too much power for my taste, so I ran them at 2400MT/s.

The biggest issue I see is that X399 & 1950X are all old stuff at this point, so it's entirely possible they won't work with the latest DIMMs, even if they're entirely JEDEC spec. Crucial site lists the older 2666MT/s DIMMs, but they don't even stock them anymore.