Is 650W enough for an RTX TUF 3080 OC V2?

Joelks · 8 Oct 2021 at 20:52

Title says it all really. Will 650w PSU be enough to run an RTX TUF 3080 OC V2 safely?

PC Build:

CPU: AMD Ryzen 9 5900X
MOBO: MSI MAG B550 Tomahawk
RAM: VENGEANCE RGB PRO BLACK 32GB 3600Mhz
PSU: be quiet! Straight Power 11 650W 80 Plus Gold
GPU: ASUS TUF Gaming NVIDIA GeForce RTX 3080 V2 OC Edition (Arriving tomorrow)

Haz123 · 8 Oct 2021 at 21:00

Yes.... But you are cutting it very close and only because it is a good brand of psu. I would personally be happier with 750w if it was my pc.

VigiFlyer · 8 Oct 2021 at 21:04

You should probably look at all the power consumption for your system and then size one based Upon an 80% load

Joelks · 8 Oct 2021 at 21:08

Joelks said:
Title says it all really. Will 650w PSU be enough to run an RTX TUF 3080 OC V2 safely?

PC Build:

CPU: AMD Ryzen 9 5900X

MOBO: MSI MAG B550 Tomahawk

RAM: VENGEANCE RGB PRO BLACK 32GB 3600Mhz

PSU: be quiet! Straight Power 11 650W 80 Plus Gold

GPU: ASUS TUF Gaming NVIDIA GeForce RTX 3080 V2 OC Edition (Arriving tomorrow)

Haz123 said:
Yes.... But you are cutting it very close and only because it is a good brand of psu. I would personally be happier with 750w if it was my pc.

I've ordered an NZXT C-Series C850 850W 80+ Gold Fully-Modular Power Supply, it's just the GPU is arriving tomorrow and the PSU has been delayed until Monday. Wondering if I try out the 3080 on my current 650W will it mess anything up

VigiFlyer · 8 Oct 2021 at 21:22

Here is a psu calculator from a manufacturer. It might give you an idea

https://www.bequiet.com/en/psucalculator

Haz123 · 8 Oct 2021 at 21:23

You should be ok. Bequiet make good PSUs so if you get a power spike the OPP will kick in and pc should just shut down.

Lots of power supply calculators out there and shows that system is almost bang on 650w usage.

Why have you gone for NZXT PSU? Not a brand well known for their PSUs.

Joelks · 8 Oct 2021 at 21:28

Haz123 said:
You should be ok. Bequiet make good PSUs so if you get a power spike the OPP will kick in and pc should just shut down.

Lots of power supply calculators out there and shows that system is almost bang on 650w usage.

Why have you gone for NZXT PSU? Not a brand well known for their PSUs.

I just researched a bunch of different reddit posts, youtube videos etc. and it was the one that popped up the most

mickyflinn · 8 Oct 2021 at 21:49

Joelks said:
I just researched a bunch of different reddit posts, youtube videos etc. and it was the one that popped up the most

Its fine its based on the Seasonic Focus Plus Gold platform.

Whattheduck · 9 Oct 2021 at 11:01

You should be OK, but you'd be on the far end of the efficiency curve (maybe only 1 or 2% loss in efficiency though)
As others as said, you'd be better off going a bit higher to 7-850w. Especially as gpus are getting even more power hungry.
I'd personally go for an evga or corsair psu too, they are well renowned for being solid units.

Whattheduck · 9 Oct 2021 at 11:09

My bad. I should have read that you've ordered an 850. Good man