Re: Bitcoin challenge transaction: ~100 BTC total bounty to solvers!
It depends what expenses you have. I'm using my small rig to heat my home so actually it's paying itself by just generating heat. Everything else is just pure profit.
Just like the old days of mining Bitcoin.
I live in a warm temperate to arid area, so the excess heat is usually unwanted, except in the coldest parts of Winter. The temperature today is going to peak around 35 degrees C.
...surely there must be a more efficient way to heat your house? Your GPU is basically like a simple foot heater, so its efficiency is very low compared to something like reverse cycle A/C.