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Old 2020-06-01, 13:34   #284
sdbardwick
 
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Aug 2002
North San Diego County

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I wouldn't replace the PSU unless more efficiency is desired.
The Corsair RM850 is a quality PSU with honest ratings; 850W @ 50C ambient.
If the draw is 760W at the wall, the rig is pulling about 675W DC, or about 79% of rated capacity (assuming 88.5% efficiency).

A more efficient unit might make fiscal sense, but one must investigate the actual efficiency curves for replacement candidates; the old "max efficiency at 50% of rated power" rule cannot be relied upon. Many supplies peak at lower loads, but the slope after the peak can be gentle.
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