ASIC miners are dead, there is no money in bitcoins as their difficulty is too high and the ASIC miners are only good for them, all new coin mining has went scrypt mining, which so far, is immune to ASIC processors. That leaves only GPU mining and scrypt mining favors AMD gpu's. Your 770, while an awesome beast of a GPU for gaming sucks for mining because it's Nvidia and they don't do scrypt mining very good. A $150 AMD card would beat it in hashes per second. at 250h/s that your card would get, running it at 24/7 at full load and thus reducing the life of it, you could probably pull in $50 or so a month, minus the electrical your system uses for that 24/7 running, not being able to game on your pc, etc. It's not really worth it unless you build dedicated boxes for it, and hope you can recover your hardware cost and start making a profit before the difficulty of the coin you are mining gets too high. CPU mining isn't that good either, I tried on my 8320 and with 8 cores going and my PC basically useless because everything is maxed, the CPU's only give like 60h/s. Maybe 5 bucks a month after electricity, and for what, to not be able to use my computer and probably killing my cpu as well as heating my legs way too hot from all the heat.