Haha, I just ordered a 750w upgrade PS from EVGA, as compared to my current Corsair 600w. Have a couple of pretty heavily overvolted 680 4GBs and an old work horse 4GHz i7 920. Running Valley at full I get absolute maximum to somewhere in the 720-725 range - right there with the online PSU calcs. 1KW, that's what the aggregats here in Finland use to heat up saunas to 100°C
right, the 600w doesn't cut it. I get hard crashes on benchmarks, 100% probability on the EVGA furry-tessy doughnut for instance. Also my meter giving tose aforementioned readings of 700w+ - that poor Corsair must be crying itself to sleep every night. Also I wonder if it's even safe with that sort of PSD torture, but that's another discussion.