Yeah that's the only thing putting me off upgrading (plus no money is that any bigger miner I would really still like to have control of the computer part of the miner. Look at kncminer or anything like that, lots of gigahashes but you have to use the linux board that comes built into it to control it. I like tinkering with my pi - guess that's the difference between a hobbyist and an investor. Anythink I think the bitfury works through usb? I am envious