I've got two over-clocked S1's running off a Cooler Master V1000 (stateside SKU=RSA00-AFBAG1-US).  It has fully modular cable design and eight PCI-E 6+2 pin connections.  Paid $209 USD new at the local geek shop & it works flawlessly, I would definitely buy another one.

Has anyone heard when Bitmain might release the S1 --> S3 upgrade kit they talked about, at what price.  Sorry if this was already answered but at 70+ pages I don't have the time - or attention span - to read the entire thread.

Regards,
JR