Having a bunch doesn't improve anything. efficacy is same for one machine - as it is for this bunch. Fact is, he is barely breaking even same as everyone else. Only the guys stealing electricity will prevail.
Oh so true! With a network hash rate of currently 216.6 PH/s and next difficulty in the area of 31.5B we can see where this is going. As said before I'm really impressed by Spondoolies-Tech and their products, unfortunately not even at 0.55 W/GH (off the wall) it's possible to reach a positive ROI any more if not having free energy (and again and again, THERE IS NO FREE ENERGY, period!).
We need the new tech, more TH at less W and lower price! It's all going to hell too fast, I'm really wondering how large mining farm are going to make a profit considering all costs involved with decreasing mining reward and current low FIAT exchange rates.
Waiting for BTC/USD rate to rocket up to $800-$900. Then a lot of us would be more happy. This $4xx range is pooey.