Question Best motherboard for running a Ryzen 9 9950X and 192GB RAM ?

[nnanatu]

I already have purchased this memory pack: CORSAIR VENGEANCE DDR5 RAM 192GB (4x48GB) 5200MHz CL38 Intel XMP iCUE Compatible Computer Memory - Black (CMK192GX5M4B5200C38)

And just now after reading the "validated memory support list" of the GIGABYTE AORUS PRO ICE memory i figured this:

The non-rgb pack is from Spectek B i have no idea what brand is this, i read someone saying its a "cheap Micron brand (?)"
Is this something i should worry, how bad is this compared to the Hynix version?

I also read multiple comments of people saying this memory would not run at these speed.
They labeled on the document "Speed 5200" will it indeed run at 5200, or is it too much expect it will reach this speed by just enabling XMP?

This machine is for emulation of virtual machines, ill be using Windows 11, my software rely heavily on WINAPI as do the applications im running on graphics acceleration, i'm not using Linux, or running any kind of games.
It will perform "considerable" disk I/O, constantly (re)starting applications, creating/cloning machines, rebooting, etc, not something absurd but far from what a "casual" user perform.

I have no budget for a Threadripper or HEDT yet, old xeon server also would not fit on my use case.

My current build is a 14700k, RX 7600XT 16gb, 64GB ram.
Which this same mentioned use case, i have been able to run 62 VM’s, its using 100% ram, ~90% vram, ~50% gpu, ~80% cpu.

My new build:

CPU: 9950X
MB: ???
RAM: 192GB 5200Mhz
GPU: 2X Arc 16GB or 2X RX 7600 XT 16GB
SSD: 2X Corsair MP700 PRO 1TB
Cooler: Artic Liquid III 360

I need a lot of VRAM, gpu use is medium, 2TB is enough for me my machines they use like 4~7GB.
I'm also thinking on getting two gen 5 of 1TB instead of one of 2TB and try raid 0 on it, would it be worth? (losing data is not a concern and i could format/disable it at anytime).

I'm looking for recommendations about the motherboard, i have found these:
GIGABYTE X870E AORUS PRO ICE $390
ASUS ROG Strix X870-A $357
ASUS ROG STRIX X870E-E $508
(these prices are after tax)

The last one is so expensive i would like to avoid it unless really necessary.
What best motherboard for this use case?

 

[Aeacus]

I also read multiple comments of people saying this memory would not run at these speed.
They labeled on the document "Speed 5200" will it indeed run at 5200, or is it too much expect it will reach this speed by just enabling XMP?

Look the memory QVL again, namely the "Memory Socket Support" part.
1 - V
2 - V
4 -

The RAM you have, will run at 5200 MT/s, when either 1x DIMM or 2x DIMMs of that RAM are inside the MoBo. But when there are 4x DIMMs, then it will not run 5200 MT/s. If 4x DIMMs all together even work at all, that is.

This is the issue with DDR5, it is iffy when 4x DIMMs are installed into the MoBo, since most MoBos have trouble running 4x DIMMs.
This wasn't an issue with DDR4, DDR3 etc. But DDR5 has this "caveat".


Gave a quick look and for Gigabyte MoBo, highest capacity DIMM, that is confirmed to work in all 4x slots, is 24 GB Crucial [CP24G56C46U5.M8B1] running at 5600 MT/s.
For Asus X870-A and X870E-E, highest capacity DIMM, that is confirmed to work in all 4x slots, is also 24 GB but CORSAIR [CMP96GX5M4B6000C30 (Ver 5.53.13)] running at 6000 MT/s.

So, your 4x 48 GB RAM had 50:50 chance that all 4x DIMMs together work at all. And even smaller chance that they operate at 5200 MT/s. IF (and it is a BIG IF), the RAM does work, it may default to 4400 MT/s or 4800 MT/s.

What best motherboard for this use case?

Best is vague term.
Best how?
Most features? Best compatibility? Cheapest price?

All-in-all, RAM should be bought after buying MoBo and not before.
Since when you have the MoBo, you can then buy the RAM based on memory QVL, IF you want a guarantee the RAM working in given slots and at given transfer speed. Else-ways, you'd be playing RAM lottery where chances that RAM work as you want it, are 50:50 or even less.