I can't figure out how to amend a title, but I get your point.
Does it make any sense at all to take a little-used home pc and dedicate it to mining?
Also, completely unrelated, but I love your smurf avatar. It reminds me of something I did years ago for my daughter. I took a stuffed smurf head and mounted it on a plaque I picked up at a garage sale (after removing the original plate). I can sometimes have a twisted sense of humor. I think she still has that on her wall, even though she has several children of her own now. I guess she inherited my twisted sense of humor...