Can power supply affect graphics performance?

lyon2310 · Sep 23, 2017

My friend as a gaming PC with good components, i7 7700k, gtx 1060 3gb and a 350W power supply

He gets around 20-40 fps on pubg, all low settings and I get 50-80 fps with g4560 and gtx 1050 ti.

Is the reason he's getting low fps is because of he's low power supply?

sizzling · Sep 23, 2017

No but he should be using a higher wattage, if that psu fails it could destroy his pc.

vapour · Sep 23, 2017

Yes, gpu needs enough power to perform, especially for higher end gpus. Ditch that crappy gpu with a seasonic 520W for ~$36

sizzling · Sep 23, 2017

vapour :

A power problem wont cause reduced fps, it will cause stability issues or rebooting.

jonnyguru · Sep 23, 2017

You don't get low FPS from a poor power supply.

Sizzling is correct.

vapour · Sep 23, 2017

Some GPU may choose to power down due to lack of power. Please list all your specs and your friend's specs including monitor. What game, resolution, setting.

jankerson · Sep 23, 2017

vapour :

No, there is enough power to run it or the PC wouldn't even boot.

The graphics card will pull everything it can and overheat the PSU if it's not up to spec.

However a 350W PSU isn't even close to enough for that machine.

jonnyguru · Sep 23, 2017

Right. If the PSU gets pulled down due to be over-taxed, the PC will reboot or shut down.

vapour · Sep 23, 2017

jankerson :

That is why I want to know what he meant by good components and then try to find the reason.

jankerson · Sep 23, 2017

That GTX 1060 is bottlenecking that I7 7700K.

sizzling · Sep 23, 2017

vapour :

Not true. The gpu has no way of knowing a PSU cannot deliver sufficient power. What happens is the gpu draws the power/current it needs, if the psu cannot provide that amount of power you either get voltage fluctuations or complete psu failure. Voltage fluctuations will give instant stability issues or reboot. PC PSU's are quite dumb, they do not communicate with other components, just provide regulated voltage up to a certain current/wattage.

This myth has been around for year but is nothing more.

lyon2310 · Sep 23, 2017

He has a 1080p, 60hz monitor. I think its 24 inches. Player's unknown battlegrounds was the game i was talking about.

vapour · Nov 13, 2017

@ OP

Do you have an update on your friend's FPS issue?

soybobis818 · Sep 5, 2018

Hi, I'm having graphix error, since I have my palit 1050 Ti after that, I switch from Fx 4100 to i5 8400 then still having the same issue. Could it be the gpu or my bad PSU which is corsair VS450.

how do I post screenshot of the weird graphix error that I'm getting? thanks.! newbie here!

Nigel Spike · Sep 5, 2018

Hi Soybobis and welcome
1. You should never hijack an old post about another problem. You start you own post, with a proper title.
2. For posting screenshots, follow the instructions from the sticky on top of the forum.

Nigel

soybobis818 · Sep 6, 2018

soybobis818 :

Nigel Spike :

Sorry, ddin't know that. im a newbie. I deleted my post. thanks tho

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