http://www.cryptocoinsnews.com/spondoolies-tech-introduces-sp20-jackson-1-7-ths-home-miners/

Quoted in part:
Hash Rate: 1.7 th/s +/- 5%, Over Clockable to 1.8 th/s, 8 ASIC Chips
Power Consumption: 1100 watts at the wall with a Gold rated, 90% efficiency PSU suggested
Power connections: 4x PCIe
Smaller Form Factor 1/3 size of the SP30, 60dB or less estimated

I'd be much happier with a 2 TH/s 2U unit where you didn't have to run the PSUs at 110% and have to run them on 220V to get their full performance. 2 TH/s in 2U is plenty dense for any hosting facility.