* Also: you need to own it, be hashing with it, and have measured the power draw at the wall. No hearsay. I own two SP30s so I know from experience how they perform.
I've got a bunch of SP30. They are pretty good. Awesome even. But, no matter. They still won't ROI - ever. They run really well and it is a damn good system. However difficulty is high, BTC price is low. The calculus changed and it just doesn't make sense. I wonder when the .2 W/GHs gear is coming out? The next gen stuff is going to be interesting.
The question I have is firmware upgrades. My machines are running perfectly at 4.4T. Should I upgrade? What if this fucks things up? I kind-of like the machines running at full speed without any interruptions. I don't know if it is such a good idea to upgrade. Zvi?
Why are you running hardware knowing you'll never make your money back. Are you rich enough that basically giving your money away and losing money everyday is ok for you?