Guaranteed improvement of typical bios files Optimization for Z390 platform Enhanced performance and stability
Guaranteed improvement of typical bios files Optimization for Z390 platform Enhanced performance and stability
Hello, I understand you're using your 9900KS for stable performance in a workstation for audio post production. You want to set it up with default BIOS and enable XMP only for RAM. In normal operation, the 9900KS runs hot enough, so you're considering adjusting the frequency to 4900 MHz instead of 5000 MHz. I noticed the voltage drops automatically when you switch to 4.9 GHz and your CPU temperature decreases by about 10°C from 1.27 to 1.2 VR OCR without changing the voltage settings. Would altering the ratio to 49 help? Also, should you disable MCE or keep it enabled? You might be able to adjust VCCIO and VCCSA without affecting stability. Deactivating XMP Profile 1 on your Trident Z CL14 could also lower SA voltage. Let me know if you need more details. Thanks!
It doesn't seem to make much difference with the heat. The XMP is working well, so we should keep that. What's the temperature actually? It looks normal. I'd prefer a stable ratio so the boost runs smoothly, but aim for a voltage offset between -0.1 and -0.07—it sounds like it's holding steady there. That will lower the voltage too much.
Even with a VCSA/IO of 1.3, my manual OC settings were at 1.1 and 1.2. For 5 GHz, I used a medium LLC with about 80 degrees package on Cinebench R23, set to 1.35 V and VRout 1.2. Auto at 5 GHz gave me over 90 degrees in both Cinebench and VROut at 1.27. Changing the ratio from 50 to 49 on the default motherboard seems to adjust the settings automatically—lowering the clock to 4.9 GHz while keeping the VRout at 1.2. This appears to stabilize things without needing manual tweaks, unlike my previous offset method which required constant testing. It’s strange that the BIOS handles this internally, providing more headroom and maintaining stability. In my custom setup, lowering the clock forced a voltage drop, but here it seems the system compensates by adjusting voltage and keeping performance solid.