If you are folding on your 8800gtx it may be time to consider an upgrade if funds allow, a GTS 450 will produce 7-9k ppd for a lot less power roughly, 100watts per hour. Thats probably $10 a month depending on your electric cost, the same could be said of the 8800GTS depending on whch version it is.
I agree. You can get one for around $100 if you look around. You'll double the output of the 8800GTX, reduce heat..and if you fold on it for a year, it will basically pay for itself in the energy it saves from using the old one.