~ 850W PSU without breaking the bank?

[Rob_B]

I'm running the below spec on a 650W NZXT C series PSU (A tier, based on Seasonic Focus Gold) and realise I'm on the edge of what PSU I should really be using. I don't really have a budget so my options are:

1) Continue to run as-is with a power limit reduction on the 9070XT
2) Buy a new PSU

I don't really want to have to spend any money but it's probably sensible, there are a few ~850W around the £100 mark and I don't need anything fancy apart from modular.
I'm tempted by BGrade PSUs as they'd be cheap but 10yr warranties are very tempting.

Any suggestions?

7950X3D
Arctic Freezer III 240 AiO
XFX Swift 9070XT (power limit minus 7%)
Asrock B650 PG Lightning
32GB 6000 CL 28
PCIE Wifi 6 card

 

[Firegod]

B grade warranty is just 6 months. No way I'd personally take that on a PSU that needs to work seamlessly for at least a decade. Or is it 6 months with retailer and still 10 years with manufacturer? Hmm if so that would be acceptable to me personally.

ASRock Steel Legend 850W for 124.98. 10 year warranty.

https://www.overclockers.co.uk/asrock-steel-legend-850w-80-plus-gold-fully-modular-power-supply-pow-asr-04178.html

 

[Grimley]

I bought this last month as a Tier A PSU.

My basket at OcUK:

• 1 x be quiet! Pure Power 13 M 850W ATX 3.1 80 Plus Gold Power Supply (SKU: POW-BEQ-05637) = £109.99

Total: £113.99 (includes delivery: £3.99)​

Or there's this. No idea what the difference apart from the PCI-e spec is as they are both ATX 3.1 spec.

My basket at OcUK:

• 1 x be quiet! Pure Power 12 M 850W ATX 3.1 80 Plus Gold Power Supply (SKU: CA-14R-BQ) = £109.99

Total: £113.99 (includes delivery: £3.99)​

 

[Gray2233]

The 9070 series respond well to undervolting, I'd do that and see how you get on. You shouldn't see any performance loss. I know a few people running them on quality 650w units without issue. Worst case you get shutdowns, with a high end supply you've plenty of built in protections, nothing should get damaged. Best case it works fine and you save yourself a £100.

 

[Rob_B]

I'm at -50mv and -7/9% power, I think it's probably ok but as mentioned the sensible thing is to get a new PSU :/

 

[fraps]

Can get a Gigabyte UD850GM for £80 (5 year warranty) or a Corsair RM850e for £104 (7 year warranty). Gigabyte should have fixed their fire problem but it might be worth going with the Corsair for peace of mind.

 

[Tetras]

I'm at -50mv and -7/9% power, I think it's probably ok but as mentioned the sensible thing is to get a new PSU :/

How much power are you actually using when gaming (whole system)?

Do you game much?