Comment Re:hmmm... (Score 5, Informative) 212
Bitcoin is mined on ASICs these days but there are other cryptocurrencies such as Ethereum that are designed to be "ASIC resistant" by involving a very large number in their mining algorithms that needs to be stored in RAM, and changes periodically. Currently for ETH I believe that number is ~3GB. The result is that it makes ASICs unlikely to be worthwhile since a GPU is already a massively parallel processor with access to high speed ram.
So yeah, GPU mining is back and reasonably profitable. Even after electricity costs many cards would pay for themselves in 3-5 months at current rates.