Just came back from a 4 months hiatus from the world of crytos. My GPU rigs have been asleep for the summer because of the heat. Right now, is it still possible to use a GPU rig in a manner that will be profitable? Or should I just dismantle them and sell the parts?
Since summer is over, same goes for a lot of people. Difficulty going to increase for all algo. So yeah GPU is useless for mining.
Not the case; I'm turning a profit at $0.11 USD per kWh.
Wolf,
You are a dev with private (read: highly tuned, not available to public) miners. Your situation is irrelevant and unrelatable to your average miner.
Now, back on OP:
GPU mining is dead
at the moment, but this is
exactly the same situation that occurred when bitcoin asics forced out the gpu farms a while back. Something called Scrypt then hit the scene and GPU mining was back in force. History
will repeat itself. here All of the new attention on crypto-mining has brought even more programmers and academics into the algorithm scene (
Squaggle, you there?

). This spin-cycle is real and i'll call back attention to this very post when the next "Scrypt" hits the bigs.
I recommend people not dump their farms if they have 79xx/R9 2xx cards, but that's already happening. I am not selling a single GPU out of my farm because i know they will be put to use again in not too long.
In fact, if i had more disposable income at the moment, i would be buying a new rig or 2. Image how quickly a $100 280 or $200 290 would ROI itself if profitability was there.
Yup GPU mining is dead for normal home user. Unless you are a good friend of wolf0 then you will be the few who is profitable...