is 1000watt psu necessary or essential ?

West1990 · 5 Sep 2023 at 00:41

I have a 750watt fully modular psu my specs are 3060ti, i9 -9900kf, 32gb ddr4 3600mhz ram, Home system runs off ssd and is liquid cooled 30-40 degrees c idle 50-60 under demand . Pc runs well although have been running into various issues over the past year which i believe could be the psu per output demands.

i have run a osct stress test on cpu which passed all tests. memory passes all tests , but the psu crashes the system everytime.
i have checked the crash dumps logs and there is a lot of kernel power 41 logs i have noticed this happens a lot on AAA games with high gpu demands but it flags as a kernel power 41 ID,
i have lowered the game specs on an individual basis but im almost sure this is something to do with the psu. temperatures are good, cpu never runs higher than 30-40% unless installing or running full system scan gpu hits 100% useage, and is not overclocked , besides xmp and gameboost active in the bios this is with this current performance.

id have thought 750watts was ample for a fairly high spec system but 1000 seems to be becoming a requirement for higher end computers

Rroff · 5 Sep 2023 at 01:01

You won't need anything close to 1000 watt to run that system - I've got a 3070FE with a relatively power hungry (by modern standards) Xeon on a 860 watt PSU and most of the time it is barely using the PSU at 50% capacity under heavy loads.

tamzzy · 5 Sep 2023 at 01:10

What model is your PSU?
If you're using a linglong 750w then it's probably a 400w PSU

Tetras · 5 Sep 2023 at 14:44

West1990 said:
i have checked the crash dumps logs and there is a lot of kernel power 41 logs

This can be an indicator of a faulty PSU, but all it is saying is that the computer shut down or restarted unexpectedly.

West1990 said:
I have a 750watt fully modular psu

As tamzzy asked, what model is that and how old?

West1990 said:
Pc runs well although have been running into various issues over the past year

What issues?

West1990 said:
and is not overclocked , besides xmp and gameboost active in the bios this is with this current performance.

I believe Gameboost is automated overclocking and strictly speaking, so is XMP, so I'd turn them both off.

West1990 said:
id have thought 750watts was ample for a fairly high spec system but 1000 seems to be becoming a requirement for higher end computers

You don't even need 750 for your PC, 1000 would be way overkill.

no_1_dave · 5 Sep 2023 at 17:06

I'm using a 750w PSU with a 13900k and a 4090
If your PSU isn't coping with your system then it's a faulty PSU, nothing to do with the wattage