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Help choosing PSU for 3080 Ti

4.1K views 17 replies 9 participants last post by  middydj  
#1 ·
Hi gents,

I'll soon be getting a second hand 3080 TI (two 8-pins), and need a PSU upgrade, as my 550W Seasonic S12III likely won't cut it, even with an undervolt/power limit. Rest of the system is 8700k, stock at the moment, two sticks of ram, m2, ssd and an hdd.

My options due to being in a small country in the EU are somewhat limited, so I'd appreciate your advice on choosing from the ones below, including local pricing in brackets. I once had a horrible experience with a PSU that killed my motherboard (LC Power), hence the post, as most of these are rebrands I presume.
  • ASUS TUF-GAMING-750 (106e)
  • CoolerMaster MWE 750 Bronze V2 (118e)
  • CoolerMaster MWE 850 Gold V2 (139e)
  • NZXT C750 (136e)
  • NZXT C850 (150e)
  • Gigabyte Aorus P750W Gold (139e)
  • Gigabyte GP-P850GM Gold (149e)
  • Corsair RM750x Gold (143e)
  • Corsair RM850e Gold (159e)
I'm currently leaning towards NZXT C850 as Seasonic is the OEM, which should be reliable, but any tips or additional info is appreciated. Thanks!
 
#3 ·
Any of the ones listed in tier A here:


I've been using my 3080 Ti and 12600K with a 750w darkpower 12 without any issue, for higher CPUs and overclocking a decent 850w is more than plenty.
 
#4 ·
Seasonic branded units have problems with the 3000 series due to transient spikes, and I'd assume that'd carry over to rebrands.

I had a Seasonic Focus Plus and it had issues with my 3080 Ti.
 
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#9 ·
Thanks for additional info, 1000W RMe is about 40e over 850w one, I'm not really sure it's worth it, especially since it's not ATX 3.0 compatible, which is something that future GPU's may require (correct me if I'm wrong), as until recently a 10yo 1000W supply could serve through a few builds, and now, I'm not too sure of such investment.
 
#10 ·
I'm not really sure it's worth it, especially since it's not ATX 3.0 compatible, which is something that future GPU's may require
None of the supplies in the OP are ATX 3.0 so, if that's much of a priority, then none of them are of interest. 12VHPWR melting also makes it questionable whether the PCIe 5.0 side of an ATX 3.0+PCIe 5.0 supply is worth it at this time. Connector changes have, unsurprisingly, been proposed and, even if PCI-SIG doesn't rev the socket, it's unclear how cables will be replaced to update to a new plug. It's unclear what relief courts might order Nvidia to provide as it settles 12VHPWR lawsuits. And, since it's also unclear how much of the PCIe 5.0 specified signaling over the sense lines is getting used, it's plausible some amount of compatibility issues haven't yet been exposed.

The costs around all of that aren't particularly hard to estimate, though, so an entry to data driven decision making is tabulating the possibilities and assessing the most attractive tradeoffs since, ultimately, if you want to run a high spec Nvidia GPU you're going to pay for the company's inability to get organized about power delivery and insistence others bear the costs so it can hold up its profit margin. Personally, I don't see 8 pin to 12VHPWR adapters going away anytime soon and it's kind of hard for a supply not to meet ATX 3.0 at half its rating. Most of the recent releases Aris Mpitziopoulos has found to fail ATX 3.0 testing, in a formal sense, have been compliant to around 75% of their rating. And if Nvidia finds it has a problem making ATX 3.0 compliant GPUs, it'll probably just demand an ATX 3.1 anyways.

No they dont.
Your thoughtful, nuanced, and deeply erudite reply has been given all the careful attention it so richly deserves.