a couple of frames per second in the "usual" cases however, DOES make it the superior card.
Lets see, here in Ohio electricity costs $0.06 per kwh...so if I ran my card at full, peak consumption, for 24 hours a day, 365 days a year.... it would cost $36 more a year. Turning the ridiculousness factor down a touch to still be full consumption, but only 8 hours a day, 365....$12.
Not 100% consumption, 8 hrs/day - less than $10.