Question CPU Low Utilization, Max Frequency?

[DDJF]

ASUS Prime B560 Plus >5 years old
Intel i9-11900kf 3.5ghz < 1 year old
Gigabyte 3080 > 4 years old
32gb Corsair Vengeance < 1 year old
8gb Kingston Classic > 5 years old
Noctua DH-15 < 1 year old
Windows 11
850w Platinum EVGA PSU < 1 year old

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PC keeps getting a BSOD: Clock_Watchdog_Timeout at completely random times. In my experience in avionics, Watchdog issues are always tied to a CPU. CPU temps are around 37-40c at idle and will climb to high 60s when under load. GPU temps are similar and motherboard stays around 30-50c. Issues happens when gaming 90% of the time.

CPU utilization is fine at idle, anywhere from 1-20%; yet frequency is always overclocked at 4.6-5.1ghz. Defaulting BIOS or disabling XMP/Intel Boost does not absolve the issue. Intel's Diagnostic Tool for CPUs tests good.

Any advice on what to check? Doesn't appear to be temp related, thermal paste should still be good. Recently installed an additional DH-15 fan.

 

[Lutfij]

32gb Corsair Vengeance < 1 year old
8gb Kingston Classic > 5 years old
Looks to me like you're mixing and matching rams. Remove the Kingston stick(s) of ram and then have rams populating slots A2 and B2 and see if you regain stability. Got a link to the rams you're working with?

Speaking of stability, I would've looked into a Z series chipset and one with a beefy VRM design if I knew I was going to drop in an i9 onto the socket.

ASUS Prime B560 Plus
What BIOS version are you currently for your motherboard?

850w Platinum EVGA PSU
EVGA is the brand, 850W is the advertised wattage of the unit while Platinum is the advertised 80+ efficiency rating. What series from EVGA's portfolio is the PSU from?

What sort of games are you taxing the system with?

You can try and reinstall your GPU drivers using DDU. Remove all GPU drivers(intel, AMD and Nvidia) in Safe Mode, then manually install the latest GPU driver sourced from Nvidia's support site in an elevated command, i.e, Right click installer>Run as Administrator.