[rhoads]

What about using this for bit/alt coin mining? Do you guys think it is a good ratio of performance / power consumption?

[jmpe]

Notice they use the GigaFLOPs metric, which is a (maximum) floating point measure. Bitcoin hashing (it's been a while for me) is compute intensive on integer math. For a good ratio of performance/power you'd want to look at architectures like the GreenArray devices. But the world of bitcoin hashing is now firmly positioned in ASICs. You can't cut architecture fat beyond that so you'd have to look at (general purpose) architectures built on a faster silicon technology. Wouldn't count on it.

http://www.greenarraychips.com

[wmf]

Kepler is fairly useless for mining.