CPU voltage affecting sim performance

[sho69607 29]

Is it possible that an unstable overclock (not enough/ too much voltage) is affecting my sim performance? Doing a manual overclock to 5.2ghz, my sim fps dropped to the low 20's. When I restored to bio's default for the i9-10900k, my sim when right back to 40fps with the default intel turbo settings. I did do some benchmark testing and I never got a blue screen, but obviously something was off because of my low performance in the sim.

[Bob Scott 7,721]

If the temp gets high enough for the CPU to go into thermal throttling (100C on the 10900K) that might explain it. 

High voltage -> high temps.

[sho69607 29]

25 minutes ago, w6kd said:

If the temp gets high enough for the CPU to go into thermal throttling (100C on the 10900K) that might explain it. 

High voltage -> high temps.

Didn't get to that point fortunately. I was in the mid 60's underload. Once I went back to default I am now hitting 80c underload with turbo.

[himmelhorse 1,276]

3 hours ago, sho69607 said:

Is it possible that an unstable overclock (not enough/ too much voltage) is affecting my sim performance? Doing a manual overclock to 5.2ghz, my sim fps dropped to the low 20's. When I restored to bio's default for the i9-10900k, my sim when right back to 40fps with the default intel turbo settings. I did do some benchmark testing and I never got a blue screen, but obviously something was off because of my low performance in the sim.

I believe that firstly, this issue is fixed (not verified by me) by the latest update, and secondly, I believe that it is affecting quite a few people who are not overclocking. That alone, would tend to nullify CPU voltages as the root cause of the problem.

I have to admit though, that I have zero expertise in this area but it just seems logical that the above may well be relevant.

Regards

Tony

[pgde 571]

You may want to check if there is a BIOS update for the motherboard. Apparently there are a number of BIOS-related issues (see below).

 

[sho69607 29]

10 hours ago, pgde said:

You may want to check if there is a BIOS update for the motherboard. Apparently there are a number of BIOS-related issues (see below).

 

This is a brand new board and bios is already updated, but thanks I’ll check out this video.

[martin-w 3,235]

6 hours ago, sho69607 said:

This is a brand new board and bios is already updated, but thanks I’ll check out this video.

 

Z590 are new boards though, not unusual for all kinds of weirdness to be manifest and a number of BIOS updates required. 

Throttling, as Bob said, was my first thought. Especially as you were right up to 5.2 GHz, presumably on all cores, that's a big overclock considering Intel has pretty much pre-overclocked the 10900K at stock. You don't say what kind of cooling you have. 

Edited March 28, 2021 by martin-w