Originally Posted by Alepale
Any ideas what could cause residuals in LinX to vary between runs, when the CPU is at stock settings? This is my system:
MB: Gigabyte Z390 Aorus Elite
Memory: Corsair 4x8GB 3200 MHz CL16
CPU Cooler: Corsair H115i Pro
PSU: EVGA Supernova G2 750 W
Memory is tested to 16000 % coverage with no errors using Karhu RAM test in this system. Max core temp in LinX at stock is around 85 C.
Things I've tried:
1. Load optimized defaults, which sets memory to 2133 MHz CL15 at 1.20 V
2. Set Memory Enhancement setting to Enhanced stability
3. Tested with only two sticks of RAM (2x8GB)
4. Set turbo to 4 GHz using 1.25 vcore and 2x8GB memory at 2133 MHz
None of these have solved the issue. Is it likely that the CPU is broken?
Attached is an image of LinX runs using 4 GHz turbo at 1.25 vcore with 2x8GB memory at optimized defaults settings (2133 MHz). LinX is set to stop on error, yet it continues to run even if the residuals don't match.
What vcore loadline calibration are you using? And you mentioned 'stock'. Stock is all auto settings with default loadlines, keep that in mind. Gigabyte's stock afaik sets a manual vcore of 1.20v with no loadline calibration at 4.7 ghz and that will crash some systems.
Check HWinfo64 extended CPU information for the AC loadline value. AC Loadline has a huge influence on load CPU voltage on stock speeds (this is assuming you are using auto voltage---using a MANUAL voltage at 4.7 ghz is not stock, actually, if the bios is setting a manual cpu voltage for you. And trying to use 1.20v manual without any LLC at all is asking for failure). Post your loadline calibration value used also. And post your load VR VOUT shown in HWinfo64 (sensors) please.
Using Gigabyte's 1.20v manual setting (rather than auto) is very common to fail LinX at 4.7 ghz while Prime95 may pass.
Please post the information I asked for.
Then try setting CPU Voltage on AUTO, Loadline Calibration at STANDARD and AC Loadline at 100 (1.0 mOhm) in CPU VR Settings, and see if you pass at that point. If you fail at that point, set AC Loadline to 130 (1.3 mOhms). That is a guaranteed pass.