[SOLVED] GPU low power target in-game

[ludvigbuskthomasen]

Hi. I noticed while playing Cyberpunk 2077 that my 3080 card only had a 89% power target, even though i have manually set it to 117% in ASUS GPU TWEAK.

I think it might be a cpu bottleneck since when i tested the card in 3dmark and heaven benchmark, it ran with a normal and expected 100 to 117% power averaging out at 108%. (Haven't tested these benchmarks for very long though, about 10 min each)
CPU usage is not shown to be that high when playing the game, only 75ish%, but i know that a CPU can still bottleneck even though it doesn't show 100% usage. My GPU usage is 97% in-game. I do notice drops in voltage and clock speeds when the power target goes down in-game.

I initially thought my PSU diden't supply enough power, but i checked my watt usage using the website OuterVision and it gave me an estimated use of 638 watts (my PSU supplies 750).

My GPU temps are really good in the low 60s at 97-100% utilization, even with 100-117% power target.
Likewise my CPU temps are normal at 62 degress at most at 100% usage

I want to run a 3dmark benchmark that uses both my GPU and CPU, to test if it really is my PSU that isn't supplying enough. Which 3dmark benchmark is good for this?

Do you guys think it is a CPU bottleneck, PSU problem or something different?


Specs:
GPU: rtx 3080 no overclock
CPU: i7-9700k no overclock
MB: Z390-A PRO
RAM: 2*8GB 3600mhz
SSD: 1TB 500mb write/read
Monitor: 1080p 24 inch 120 Hz
PSU: Corsair RM 750x

EDIT: I just raised the resolution from 1080p to 4k and while my cpu usage drastically reduced from 75% to 33%, my GPU power target became normal at 100%ish although it still drops in clock speed by the same 30-60 mhz amount but i don't think that has anything to do with power now. Why does it drop 30-60 mhz? And does this confirm a small cpu bottleneck?

 

[Lutfij]

Couple of problems, the game you're talking about is badly coded, as in there are glitches bugs and then some more, much like Crysis was back in the day. As for the system, you forgot to mention the make and model of your PSU and it's age.

You might also want to see if the BIOS on your motherboard needs updating. If I were you, I'd overclock on the processor and since you own an RTX3080, you shouldn't be on 1080p, more like a higher resolution.

 

[ludvigbuskthomasen]

Thank you for taking the time to answer me

It is a Corsair RM 750x PSU and it is about a year and a half old.

Bios is updated.

I am playing on 1080p because it allows me to play with everything on ultra inclusive ray traycing with 60 fps. The game is so poorly optimized that i can't play it at a higher resolution and 60 fps without sacrificing RT quality. I also only have a 24 inch 1080p monitor, so when i play at a higher resolution it is through DSR.

 

[SHORTCIRCUT]

Power target is more like headroom available for the GPU to use more power if needed. If the GPU doesn't need that extra power (whether that be because of like above said the games coding, or other reasons) then it won't draw it out, hence the lower power%. Power is just drawn when needed, not fed to. Because benchmarks are designed in a way that manages to utilize the full potential of the gpu, they're able to draw out those power targets you're looking for


That's why when you switched to 4K, you noticed your power target increase. Cause now the GPU has to do more work (whereas in 1080 it could rely more on the cpu) so it needed that extra power.