Vesku
Diamond Member
- Aug 25, 2005
- 3,743
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If his UPS number is accurate, I'd have to assume he has turned off all power saving CPU features in BIOS.
Simple napkin math says a 6990 should use around 375W max, so 750 for the two of them. That is absolute max, like you get from playing with furmark, bitcoin mining doesn't stress the card that hard. Also that is stock, if you are properly underclocking the memory and reducing voltage for mining it should be significantly less. CPU *should* be 20W or less at idle. All in all with proper mining tweaks you shouldn't be anywhere close to 1.2KW, you should be around 700W max.