Thats a good point actually, we see wattage comparisons all the time, but has there ever been a decent table drawn up with, say a high end i7 oc rig as a baseline, and various high end gpu configurations, comparing the actual cost difference in pounds per year based on an arbitary electrical unit price?
EDIT: It could be based on say 50hrs per week idle load 6hrs prime95 and 6 hrs 3Dmark vantage loops per week?
Would make very interesting reading, could even do a spreadsheet so you can change the price of the electricity.
Im to lazy to do this but it would be a very good idea