Question Memtest86 shows a ton of errors, but only if more than one RAM stick is installed ?

[Diliglont]

Hi, desperate owner of expensive computer parts here

I upgraded my computer a few months back, here is the list of parts:

AMD Ryzen 7 7800X3D
Gigabyte B650 AORUS ELITE AX AM5 rev 1.2
Corsair Vengeance 4 x16GB DDR5 6400 MT/S
MSI RTX 2060 SUPER GAMING X 8GB
2x Samsung 980 PRO 1TB NVMe M.2 SSD
Seasonic FOCUX GX 750W 80 PLUS GOLD

The power supply and graphics card are 4 years old, everything else was bought in february this year
Exact part number for the RAM: CMK64GX5M4B6400C32

My problem is, the system is very unstable, I'm getting BSODs, games and apps freeze and/or crash randomly. An app or game freezing is usually quickly followed by a BSOD

I tested the RAM using Memtest86.

All 4 memory sticks pass the test individually
but as soon as I install more than one stick, memtest shows a ton of errors.
Running the test with all 4 sticks resulted in the test ending after 3 minutes because it hits 10 thousand errors.

What I want to know is, is this a RAM issue or a motherboard issue? I'd like to know before sending the motherboard to repair only to find out that it was alright all along.

Looking forward to your replies, thank you.

 

[--SID--]

CMK64GX5M4B6400C32

That RAM is optimized for Intel. Besides that, for the memory controller 4 sticks is a lot more difficult to run than 2 sticks. Advise: return the RAM and get 2x32GB with AMD EXPO profiles.

 

[Diliglont]

That RAM is optimized for Intel. Besides that, for the memory controller 4 sticks is a lot more difficult to run than 2 sticks. Advise: return the RAM and get 2x32GB with AMD EXPO profiles.

Oh my... since when is RAM optimized for one CPU or another? That's news to me..

As far as I know, 2x32 runs faster than 4x16, I just though it'll look cooler with all 4 slots occupied.

Could you point me to a kit that would work well? I looked some up on the local shops and found something that's also from corsair: Vengeance DDR5 2x32 AMD EXPO 6000Mhz CL40. I'm not sure but should I be looking at the CL40 part of it?

 

[--SID--]

Corsair CMK32GX5M2B6000Z30 or G.Skill F5-6000J3038F16GX2-FX5

 

[Diliglont]

Both of those are easily available where I live so I'll be sure to check them out.

I'll leave this thread for now since the solution seems to make sense,
Thank you very much.