received the u1 and begin mining now. so far no problem.
Looks good. Are you running with 'default settings'? I use clock=x0981, getting about 2 GH/sec. Tried a higher setting but there was an increase in HW errors without a real benefit in hash rate, so am staying with x0981. Using bfgminer 3.10.
Cheers
yeap, default settings, I never overclocked it since I havent get any cooler for it. So far din't found any error.
I use a simple USB fan, and the HW error rate is very low at x0981. It pushes it to a long term average of about 2 GH/sec per device. I measured the temp with an IR thermometer and there was no drama. The power supply used needs to have enough juice to support it as well.