I should have been a little clearer. I meant that the miners spent a brief period optimizing FPGAs before they abandoned them entirely for ASICs, but during tha

I should have been a little clearer. I meant that the miners spent a brief period optimizing FPGAs before they abandoned them entirely for ASICs, but during that brief period I'm guessing they squeezed as many hashes/watt out of the FPGAs as they could.