[SOLVED] XMP causing games to crash ?

[Cashby]

Hi All

I recently built my PC with the following specs:

Case
Corsair 4000X
CPU
AMD Ryzen 9 5900X
CPU Cooler
H100i Elite Capellix 240mm
Mobo:
ASRock X570 Taichi
PSU
Corsair RM 650X
Memory
Corsair Vengeance RGB Pro 4x8 32GB 3600MHZ
CMW16GX4M2D3600C18


So i originally had a lot of issues with WHEA and power problems with this CPU but have managed to sort these with bios updates and system is very stable
however when i enable XMP for the memory - i can get a very decent benchmarks and results. Ive ran mem tests and all have come back working fine.
user benchmark came back with the following with XMP

Corsair CMW16GX4M2D3600C18 4x8GB 4,451 User benchmarks, average bench 96% 4 of 4 slots used 32GB DIMM DDR4 clocked @ 3600 MHz Performing way above expectations (87th percentile)

114%Outstanding

MC Read 45 MC Write 40 MC Mixed 40.7 120% 41.9 GB/s

SC Read 29.7 SC Write 26.7 SC Mixed 39.3 91% 31.9 GB/s

Latency 72.5 55% 72.5 ns

however - if im playing a game it will just randomly crash back to windows. no blue screen or anyhthing.

If i turn XMP off i can game fine but the ram is like this in userbenchmark and its def noticeable

Corsair CMW16GX4M2D3600C18 4x8GB 4,451 User benchmarks, average bench 96% 4 of 4 slots used 32GB DIMM DDR4 clocked @ 2133 MHz Performing below expectations (26th percentile)

77.5%Very good

MC Read 31.9 MC Write 27 MC Mixed 26.5 81% 28.5 GB/s

SC Read 21.7 SC Write 15.9 SC Mixed 27.4 62% 21.7 GB/s

Latency 96.9 41% 96.9 ns

I have tried using the ryzen calculator to manually set the timings and voltage but cant seem to post at all when im doing it. im not an expert at this though so im probably missing something and asrock bios is quite challenging to navigate. I know the ram is not on the QVL but surely i should be able to get this to run at least at 3600MHZ

or should i just give up and go and get 3200MHZ ram that is on the QVL?

 

[GeorgeGod]

maybe trying changing ram will help

 

[sizzling]

Running 4 dimms is more likely to have issues at higher speeds than running 2 so you may just be hitting that limit. Try XMP again but push the voltage to 1.45v, that is as high as I would go. If it works then slowly start reducing it until it becomes unstable again and then increase a little. You are looking for the lowest voltage it will run stable.

 

[Cashby]

Running 4 dimms is more likely to have issues at higher speeds than running 2 so you may just be hitting that limit. Try XMP again but push the voltage to 1.45v, that is as high as I would go. If it works then slowly start reducing it until it becomes unstable again and then increase a little. You are looking for the lowest voltage it will run stable.

I enabled XMP and instead of starting at the highest i just increased the voltages slowly upwards until it became stable and it seems to have found a sweet spot. I might now try and tweak the timings and see if I can improve it just slightly more.
Thanks so much for your help I was almost going to buy new ram as i was so sick of it.