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Dual GPU PSU requirements

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  • 02-12-2021 10:34am
    #1
    monkeyslayer
    Registered Users Posts: 928 ✭✭✭monkeyslayer


    Hey was wondering if 850w would be enough to run a evga Rtx 2080ti and a evga Rtx 3080 at the same time?

    Was previously running a dual 208ti system with sli but one failed and the warranty return is a new 3080 (not ti).

    That was fine, no problems really. They're for gpu 3d rendering so the sli is not really needed, just concerned about the power req.



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    #2
    K.O.Kiki
    Registered Users Posts: 18,707 ✭✭✭✭K.O.Kiki


    Probably not. Even sustained you're close to the limit - a good PSU can take it, but spikes would trip it.

    2080 Ti: 300W sustained

    3080: 370-470W sustained

    PSU recommendations:

    Cooler Master MWE 1050W - 150eur

    Corsair RMx 1000W - 170eur

    or any number of 1200W+ for 200-odd.



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    #3
    monkeyslayer
    Registered Users Posts: 928 ✭✭✭monkeyslayer


    Thanks! Thanks for links too!



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    #4
    monkeyslayer
    Registered Users Posts: 928 ✭✭✭monkeyslayer


    Hi, I bought the Cooler master and it wouldnt power up, any ideas? I put the Corsair 850w back in with just the one video card and it was fine. The cooler master has somethign saying 10 M/B and the the corsair has 24 M/B what do these numbers mean? Figured I could just swap out the cables but the hard drive connections were different, which was fine as they supplied the cables, jsut the start up thing I'm a bit stuck on. Any thoughts?



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    #5
    Damian Jolly Abacus
    Posts: 0 ✭ Damian Jolly Abacus


    https://www.boards.ie/discussion/comment/118377666#Comment_118377666

    It’s dead.

    if it won’t power up connected to the MOBO & your prev one does then the PSU is DOA. It happens unfortunately!

    funnily enough too; in all my time building PCs the only DOA component I’ve ever had was a PSU!



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    #6
    monkeyslayer
    Registered Users Posts: 928 ✭✭✭monkeyslayer


    Gosh, thats annoying as have had it here for a few weeks only got around to installing it today. Ordered the corsair, returning the coolershitmaster...

    thanks!



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