I highly doubt it was from your gaming that you saved 45 bucks. As somebody already pointed out in this thread. It would cost under a buck to run one of these on a monthly basis. If you had other things to do. You most likely were out of the house, not watching tv, lights off ect.
I take it you're joking that it'll cost under a buck per month running 8800GTX? I assume you never see electric bill statement, do you? Obviously, my 36" CRT TV (380 watts) is on an avg 10 hours per day. The lights in my son and daughter's room (age 2 and 4) are on throughout the night every night because they are afraid of the dark. My PC consists of:
I don't know the actual power that my pc consumes, but believe to be somewhere in the ballpark of 350-500watts (including 22" monitor (75 watts), Speakers w/subwoofer).
Anyway, my typical power usage during the month is about 1000-1300kwh when gaming.
Let's take 1000 kwh usage per month for calculating purpose. This is the typical bill would look like:
Rate Charges:
Customer Charge = $6.21/month
Distribution Charge = 2.660¢/kWh
Transmission Charge = 1.037¢/kWh
Transition Charge = 0.233¢/kWh
Demand Side Management Charge = 0.250¢/kWh
Renewables Charge = 0.050¢/kWh
Generation Charge -
Basic Service = 11.790¢/kWh
Delivery Services:
Customer Charge = $ 6.21
Distribution Charge = 0.02660 x 1000 $26.60
Transmission Charge = 0.01037 x 1000 $10.37
Transition Charge = 0.00233 x 1000 $ 2.33
Demand Side Management Charge = 0.00250 x 1000 $ 2.50
Renewables Charge = 0.00050 x 1000 $ 0.50
Total Delivery Services = $48.51
Generation Charge:
Basic Service 0.11790 x 1000 $117.90
Total Monthly Bill $166.41