PSU for 7900xtx and 5800X3D

Andye1985 · 21 Jan 2023 at 13:06

Hi i am upgrading my pc to 5800x3d and either of the 7900 GPU's most of the sites i have looked at say that a 850W PSU would be fine for these 2 parts. Just wanted a Human opinion not just a website calculator.

Cheers Andy

pigeonguyuk · 21 Jan 2023 at 16:37

If your budget allows it i would go future proof, for the next 10 years.

Im personally waiting for the Seasonic Vertex PX1000/1200 to appear in the UK (The Platinum version of the below) as they are future proofed with ATX 3.0 and PCIe 5.0 standards and a 10 year warranty.

850W should be enough but going for 1000W will long term mean less stress on the PSU and most efficiency tests are done at 50% PSU load.

My basket at OcUK:

1 x Seasonic VERTEX GX-1000 1000W 80+ Gold Modular Power Supply (SKU: CA-088-SS) = £259.99
1 x Seasonic VERTEX GX-850 850W 80+ Gold Modular Power Supply (SKU: CA-089-SS) = £219.95
1 x Seasonic VERTEX GX-1200 1200W 80+ Gold Modular Power Supply (SKU: CA-087-SS) = £289.99

Total: £781.63 (includes delivery: £11.70)

Tetras · 21 Jan 2023 at 19:52

If you already have the PSU, I'd just use it and see what happens

JollyJamma · 22 Jan 2023 at 10:24

Andye1985 said:
Hi i am upgrading my pc to 5800x3d and either of the 7900 GPU's most of the sites i have looked at say that a 850W PSU would be fine for these 2 parts. Just wanted a Human opinion not just a website calculator.

Cheers Andy

What model is your current PSU?

If it's a 850 watt turd, you might just blow up your shiny new GPU and CPU. Not all PSUs are made the same.

You haven't given us a budget if you were to replace the PSU.

Andye1985 · 22 Jan 2023 at 10:50

No I would need a psu, but won't need to future proof as this would be the last upgrade on this current PC. Was looking at a 850w gold+ psu

Darujhistan · 22 Jan 2023 at 12:11

Andye1985 said:
No I would need a psu, but won't need to future proof as this would be the last upgrade on this current PC. Was looking at a 850w gold+ psu

But you could take your new PSU to your next build.

Andye1985 · 22 Jan 2023 at 12:26

Darujhistan said:
But you could take your new PSU to your next build.

I would likely give the PC to my son

Darujhistan · 22 Jan 2023 at 12:39

Just buy a 850w then.

muon · 22 Jan 2023 at 13:13

Even 850w is probably overkill.

It is easily enough.

JollyJamma · 22 Jan 2023 at 21:46

Andye1985 said:
No I would need a psu, but won't need to future proof as this would be the last upgrade on this current PC. Was looking at a 850w gold+ psu

A good quality PSU will last a good while and if it’s one of the better units, it’ll probably comfortably deliver more than it’s rated output.

The SF750 watt PSU I have does 800 and something watts (I don’t recall exactly how much but it was mid 800s) and comes with a good warranty.

Corsair/Silverstone/Phanteks/etc all usually make good PSUs. Do some googling for exact model reviews.