http://www.coolmaxusa.com/productDetailsPower.asp?item=I-500&details=spec&subcategory=120mm&category=single

1. No PCI-e connectors - you could chop this thing up
2. Not 80 plus
3. 34A on 12V rail - stock Antminer S1 wants 30A (360W) so you're running at 88% stock speed
4. It's a Coolmax

get this:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013

1. XFX = Seasonic = good quality. I'm running an Antminer S1 on a 6 year old PC Power and Cooling 610W
2. Single 12V rail @ 45A - 30A/45A = 67% + room for OC

edit: 51.99/shipped thru 06/2 w/promo code + $25 rebate = $26.99 + peace of mind