Hi avid overclockers! Please help me (on somewhat a continuation of Need a little help – 8000M RAM with 9950x3d!)
TL/DR: I can get 8000MT/s memory stable until I try to use my GPU…
I'm only able to run EXPO/XMP 8000MT/s profile memory with very low VSoC (less that 1.1V sometimes 0.95 0- depends on the kit). Below said voltage the system is stable enough to run any memory test program (TM5, Prime95, y-cruncher, LinPack Extreme, HCI MemTest) for a few hours. Above that the mem tests will yield erros or crash the system.
My problem is that even at these low SoC voltages I can not get FurMark (GPU stress program) to run along side a memory stress test. For example y-cruncher and FurMark will reboot the system in a few minutes (no errors, just a reboot). Could the VSoC be too low and that's causing issues with the GPU stress test? If I run just FurMark without a memory test it runs fine, since probably not the case…
I don't think it's a PSU issue (see specs below) as I can stably run FurMark when the memory is at 6000MT/s (with PBO on so pulling in extra power). PBO is now disabled until I get 8000 stable.
I'm basically using the EXPO/XMP timings, leaving everything on AUTO (V DRAM, VDDQ and VDDIO) and just lowering VSoC. I've tried setting just V DRAM and VDDQ to higher voltages (1.4 and 1.45), but same result… I'll work on tightening the times once/if I get it stable
I saw this post tuning-patriot-8000-mt-s-ryzen-9950x-x870e (on overclockers.net), this is one of the kits I have (the other is Team Group's FFXD548G8000HC38EDC01) which gave me hope but flooding the VSOC with 1.2V will cause any memory program to crash within 2 minutes independent of VDDP…
I then saw this post about Help on VSOC and VDDP values (again also on overclockers.net), which says to get FurMark stable first (before fiddling with VDDP) yet how low is it safe to go with VSoC to attempt this?
Specs:
AMD 9950X3d
MSI Tomahawk x870e
MSI Suprim RTX 5090
PSU – EVGA SuperNova 1200W P3