Re: GTX 780 FTW and Power Supply Question
2013/11/06 11:45:55
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I agree, you should most likely be fine, but you are getting close to be out of the efficiency band. I don't know the specific output vs. efficiency for this psu, but being Gold certified, I would think the most efficient output band would be pretty wide. Power supplies are most efficient in the middle of their output range. At 431W calculated of 550W rated, that is about 78% capacity. If I had to guess, the efficiency band would be about 40-70%. Outside those ranges, the efficiency is reduced. Lower quality units, the efficiency might really drop off, but in the case of that one, I would think it would only drop a few percent.
System #1
ASUS RIV BE
4930K 4.5GHz - Kraken X60 push/pull
16Gb Corsair Dominator Platinum 2133MHz
EVGA 780 Classified SLI - Pro SLI Bridge
Corsair AX1200i
Windows 7 Pro
NZXT Switch 810
ASUS PB287Q 4K
System #2
3930K @ 4.4GHz
8Gb 1600Mhz
XFX R9 270X (for now)