600W PSU Enough for a RTX3080?

Dominic-Toretto · 23 Feb 2021 at 19:59

Long story short: SFF Build in progress. Corsair SF750W out of stock everywhere, looks like it won't be back for a few months.

Will a Corsair SF600W Gold be enough for a RTX3080 and 3900X. Not looking to run it within an inch of it's life and have it die within a year either.

Any thoughts?

JohnG7 · 23 Feb 2021 at 20:01

I would be wary, and a good 600w PSU vs a 600w not so good PSU vs a 600w once good but older/on way out PSU.

These GPU's cause high transient spikes on the PSU and some has issues with 3090's on certain 850w PSU's as they were seen to cause 1000w transient spikes.

A member here went from 2x 1080Ti on a 850w with no issues to a 3090 and crashes till he replaced it with a 1000w.

Dontrocktheboat · 23 Feb 2021 at 20:03

underclocked yes.

On full whack, no no.

CuriousTomCat · 23 Feb 2021 at 20:30

600w PSU is a bit low. Have you already ordered the 3080? If you`ve gone over budget then perhaps get a 3070 instead to allow you to spend more on the PSU.

There are better PSUs around but they`re not as cheap as they used to be.

Dominic-Toretto · 23 Feb 2021 at 20:31

CuriousTomCat said:
600w PSU is a bit low. Have you already ordered the 3080? If you`ve gone over budget then perhaps get a 3070 instead to allow you to spend more on the PSU.

There are better PSUs around but they`re not as cheap as they used to be.

I haven't. Its more of a stock issue than budget. Any reccomendations?

JediFragger · 23 Feb 2021 at 20:33

Saw this a while ago, dug it out for ya;

Dontrocktheboat · 23 Feb 2021 at 20:45

JediFragger said:
Saw this a while ago, dug it out for ya;

Flawed review .

Playing battlefield or RDR2 does not = total power draw possible.

Load up occt power test and see that thing crash harder than a fully stacked Jenga tower.

Grim5 · 23 Feb 2021 at 20:45

hahaha, yeah no

JediFragger · 23 Feb 2021 at 20:46

Dontrocktheboat said:
Playing battlefield or RDR2 does not = total power draw possible.

Who said anything about stressing it to the max possible? Guy was asking about gaming with it which is what was tested.

Grim5 · 23 Feb 2021 at 20:48

Dontrocktheboat said:
Flawed review .

Playing battlefield or RDR2 does not = total power draw possible.

Load up occt power test and see that thing crash harder than a fully stacked Jenga tower.

Yep, and like the very first comment on that video is from another tech tuber

JediFragger said:
Who said anything about stressing it to the max possible? Guy was asking about gaming with it which is what was tested.

If you want to run the PSU at 95% of its max load for hours and hours all the power to you. But as long as you accept that occasionally your system is going to crash when that 3080 has one of its massive transient spikes. And you'll have to make sure all background CPU tasks are disabled while gaming - havnig your anti virus start a scan while gaming or windows installing updates = system crash

Dontrocktheboat · 23 Feb 2021 at 20:49

JediFragger said:
Who said anything about stressing it to the max possible? Guy was asking about gaming with it which is what was tested.

So for anything else other than gaming it's not really stable. How is that a stable system. Lol

Dontrocktheboat · 23 Feb 2021 at 20:53

Grim5 said:
Yep, and like the very first comment on that video is from another tech tuber

If you want to run the PSU at 95% of its max load for hours and hours all the power to you. But as long as you accept that occasionally your system is going to crash when that 3080 has one of its massive transient spikes. And you'll have to make sure all background CPU tasks are disabled while gaming - havnig your anti virus start a scan while gaming = system crash

Exactly. Oops I just plugged in a usb drive into my computer and it crashed. Why is that..because you are running an underpowered PSU for ur system dumb ass. But the youtube said it was fine....

TrM · 23 Feb 2021 at 20:54

Squidward said:
Long story short: SFF Build in progress. Corsair SF750W out of stock everywhere, looks like it won't be back for a few months.

Will a Corsair SF600W Gold be enough for a RTX3080 and 3900X. Not looking to run it within an inch of it's life and have it die within a year either.

Any thoughts?

i would say no it will cause you a lot of issues. someone said undervolted it would but even then it would still not be enough.

its not the total draw of the 3000 series that is the issues its the voltage spikes you get. even a good unvolted card can spike really high and very fast and even rated some good 750w psu have issues so going with a 600 i belive it would cause to many issues

Dominic-Toretto · 23 Feb 2021 at 21:52

Thanks everyone for input. Will hold out for a 750W Corsair

no_1_dave · 23 Feb 2021 at 22:19

Maybe pushing it but tbh you'd probably be ok...

I use a 650W for my rig in sig. It's mining when I'm not gaming and sometimes I even throw on an encode using ffmpeg which maxes my CPU 100% for a good 6 hours whilst the GPU continues to mine. Obviously the 3080 is undervolted while mining, only using 220W, but let's be honest, your CPU won't be at 100% while gaming so it won't be drawing full power in parallel with your GPU :confused:

Grim5 · 23 Feb 2021 at 22:36

no_1_dave said:
Maybe pushing it but tbh you'd probably be ok...

I use a 650W for my rig in sig. It's mining when I'm not gaming and sometimes I even throw on an encode using ffmpeg which maxes my CPU 100% for a good 6 hours whilst the GPU continues to mine. Obviously the 3080 is undervolted while mining, only using 220W, but let's be honest, your CPU won't be at 100% while gaming so it won't be drawing full power in parallel with your GPU

Depends whats happening in the background, a random anti virus scan starting up yes can max out your cpu while you're gaming. I think windows does now have a special gamingh mode you can run which prevent other applications and processes from runing while you game

Dominic-Toretto · 23 Feb 2021 at 23:12

I'm not looking to mess around with under volting or watching my system load. Really just looking for a rock solid build for the next 5 years or so. Thus I will wait for the 750w. Thanks again all

Dominic-Toretto · 24 Feb 2021 at 14:07

Found a Corsair SF750W in the UK. Happy days

JediFragger · 24 Feb 2021 at 14:43

Nice one.

Skilid · 25 Feb 2021 at 10:30

I signed up to the Corsair store email notifier and was able to get one after only a week or so wait last year. MSRP, too! Didn't even have to rush the basket like I did my 3080