Just measured the power draw at the wall (240V) for 4 x Technobit HEX8A1 - 260GHs Coincraft A1 units:
Pictures can be found here:
http://imgur.com/a/mRbMZ#4w7cdKp1730W = ~1000GHs
1730W / 4 = ~433W each (250GHs)
0: HEX8 0 : 270 1000/1009mV | 777.0G / 262.8Gh/s
1: HEX8 1 : 270 1000/1006mV | 74.51G / 262.9Gh/s
2: HEX8 2 : 270 1000/1006mV | 354.7G / 255.4Gh/s
3: HEX8 3 : 270 1000/ 999mV | 266.6G / 275.5Gh/s
How the heck is that possible?
That is overclocked at 1v, I assume, yes?
Consuming 1.7W/GH... That would cost me over $5000 a year, just to run it! In addition to the cost of the unit.
(Just thinking out-loud, observations, not complaining.)
Where the heck did you find a 1800W PSU?
Originally I used a 1300W (Antec HCP) and 1200W (Ax1200i) to run all 5 HEX8A1. When i sold 1 HEX8A1, I put 4 units on the 1300W psu. It didn't last long. Overnight i had to spread the power across both PSU again.
This is what my final config is and it returns min. HW erros with max GHs:
[09:17:35] <+QG> 0: HEX8 0 : 255 995/1007mV | 239.8G / 260.8Gh/s
[09:17:35] <+QG> 1: HEX8 1 : 255 995/1000mV | 255.1G / 259.8Gh/s
Power usage not recorded for this setting.
Cheers,
QG