850w enough for 7800X3D and 6950XT?

Goose · 22 Jul 2023 at 12:34

Pretty much as title really although there’s a chance i may get a 7900XT instead.

Thanks

Tetras · 22 Jul 2023 at 18:47

It might be, depends on how it handles the spikes.

gjbf1 · 22 Jul 2023 at 19:41

What make and model? If it's a good one it should be more than fine. The 7800X3D is pretty efficient. Rated at 125w but only actually draws about 88w under load.

Goose · 22 Jul 2023 at 20:06

gjbf1 said:
What make and model? If it's a good one it should be more than fine. The 7800X3D is pretty efficient. Rated at 125w but only actually draws about 88w under load.

I haven’t bought it yet, I was gonna get a BeQuiet one (ATX 3.0, PCIE 5.0 etc) but im open to suggestions.

gjbf1 · 22 Jul 2023 at 20:52

Goose said:
I haven’t bought it yet, I was gonna get a BeQuiet one (ATX 3.0, PCIE 5.0 etc) but im open to suggestions.

That'll be fine.

Darujhistan · 3 Aug 2023 at 14:39

Goose said:
Pretty much as title really although there’s a chance i may get a 7900XT instead.

Thanks

Should be fine, however you might be better with a 7900XT - lower board power and many are 2 8 pin only - and reportedly have much lower spikes.

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thesnowdog1971 · 7 Aug 2023 at 17:51

I was going to go for a 7800X3D and 7900XT for my next build but have changed my mind and am going for a 7600X and 7900XT instead.

I was tempted to go for an 850W power supply but decided that you're better off going for a PSU that's too big rather than one that isn't big enough. It'll save things from going BOOM...PFZzzz lol

dave28 · 7 Aug 2023 at 18:00

top spec 850w psu`s would be fine, i had a 16% overclocked 6950XT with i7-13700K, and running a watercooling pump with a top of the range 850w Seasonic and it ran perfectly.

random_matt · 8 Aug 2023 at 11:10

Thread gatecrasher here, 850w is ample power for a 7900X3D and 6800 XT right?

rare · 8 Aug 2023 at 11:12

Easy I would say. I ran a 12700k and a 6950xt on a SFX 750 and it was fine.

X3D chips are pretty efficient.

Troezar · 8 Aug 2023 at 13:01

As has been said it's a combination of quality and quantity. I have a 750W Seasonic Ti and it will run a 6950XT quite happily.

Darujhistan · 9 Aug 2023 at 17:58

random_matt said:
Thread gatecrasher here, 850w is ample power for a 7900X3D and 6800 XT right?

Yep. Remember that the PSU reqs reccomended by both AMD and NV are very conservative.