bondisdead

Yeah, strange then. I tried both 64gb and 32gb of RAM, and it barely used any ram. Also the same slow ramp-up to using most, but not all of the cores. All settings in BIOS are at their defaults, or with EXPO, made no difference. I have used this motherboard and others, and always maxed out ram testing before, albeit with the different CPU. I can run Prime95 and IntelBurnTest, and all 96GB of RAM is used. As an aside, is aida64 stability test able to stress RTX 5000 GPUs? It only utilizes the AMD iGPU. This used to work when I was using RTX 4000 GPUs.

Thanks for the reply! Here is what you are asking for. cpuidmsrdump.txt

Have a new Ryzen 9 9950X3D on a MSI X870E TOMAHAWK WIFI motherboard and T-Create 96GB 6000MHz CL38 DDR5 RAM. I want to run stability test, as I have an advanced PBO setting to maintain 85C. I launch Stability Test with the defaults to stress CPU, FPU, cache and system memory. I have verified in Preferences to use 95% of RAM. I Start it test, and it will run on 30 of the 32-threads. Meanwhile, it will only use 8GB of the 92GB of RAM. I wait 45-min, and still the same. Meanwhile, I try the same test on a system with a Ryzen 9 9900X and 32GB RAM, and all 24-threads and 95% of RAM is used. Is it an issue with the 92GB RAM or the new CPU