We should do class action against bitmain, they scammed us, not telling us that poor rigs can beat up our ASICs.
My almost two year old laptop GTX 1070 is making 750 H/s at 115W ... for a week now.
3x 1060 3gb in a not so optimized rig make 1000+ H/s at 360W for less than half of what i paid for the Antminer B3 (1060 can achieve 500+ H/s)
I expected more from Bitmain...
How many BTM per day are you getting for each? Earlier people with GPUs were reporting similar hashrates to the B3 but lower payouts due to more rejected shares.