No, and no. Lepa 1600 is a 6 rail system and 1200xi is not enough I believe, and if it was it wouldn't be efficient enough operating at max capability (correct me If I am wrong). I have not tried it, but perhaps it MIGHT barely work on the 1600w. I just bought a LEPA 1600w and they are shipping them now with unshielded cables. Not sure why they ship different cables with these now, but they got hot and I feel they are unsafe for this type of mining.

The best option I see for the price is the EVGA 1300 G2 (I just bought one $188 on amazon), it has to be hooked up a certain way (see crazyguys thread). Philipma came up with the idea, and it works. You have 6 cables, there are 4 with one PCI-E, but there are 2 cables with double PCI-E. The trick is you have to have one connector from each of the double PCI on each board. The regular single PCI-E plug right in.

This miner will SURELY heat your garage. Buy one for the basement too to heat your house I was thinking of attaching an empty copper pipe from the prisma to the pipe on my that connects my baseboard heaters. = free heat...