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What PSU required for one 3080 and two 3080 Ti’s?

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pegot
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2022/01/05 13:03:44 (permalink)
I have two EVGA 3080 Ti Hybrids and 1 Asus Tuff Gaming 3080.
 
I believe the two 3080 Ti's draw 350 watts and the 3080 320 Watts. Can I get away with a 1200 PSU (EVGA Supernova P2)? There isn’t anything else in the computer except an SSD and two 120mm fans. The system is just used for Octane Network rendering (replacing older 1080 Ti GPU's). So far it has been running two 1080 Ti's and the 3080 without any apparent issues. But I am unsure if replacing the 1080 Ti's with 3080 Ti's might push the PSU over the edge?
 
Other Specs: MB: AsRock Super Carrier; CPU: i7 7700k; Memory: 16GB.
post edited by pegot - 2022/01/05 13:09:55
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    nomoss
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    Re: What PSU required for one 3080 and two 3080 Ti’s? 2022/01/05 13:31:49 (permalink)
    That's 1020 watts of draw just for the GPUs.  
    That CPU draws 165 watts itself. = 1185 watts
    Probably another 45 watts for memory/mobo/RAM.  = 1230 watts
     
    For peace of mind, overhead and best efficiency I would recommend a 1600 watt supply.  Or at least 1300.
    post edited by nomoss - 2022/01/05 13:41:52

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    pegot
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    Re: What PSU required for one 3080 and two 3080 Ti’s? 2022/01/05 13:39:14 (permalink)
    So it should be ok? Or do I need to worry about power spikes and if those occur does it just shut down the system or do damage to the GPU’s?
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    kraade
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    Re: What PSU required for one 3080 and two 3080 Ti’s? 2022/01/05 13:41:20 (permalink)
    pegot
    So it should be ok? Or do I need to worry about power spikes and if those occur does it just shut down the system or do damage to the GPU’s?

    OPC usually results in a reboot, no damage to GPU

    https://modsrigs.evga.com/detail.aspx?BuildID=44032
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    pegot
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    Re: What PSU required for one 3080 and two 3080 Ti’s? 2022/01/05 13:42:15 (permalink)
    Ok thanks. Guess I will test it out then to see how it all performs. I do have an EVGA 1600 PSU but was going to use that in a new main build.
    post edited by pegot - 2022/01/05 13:45:24
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