Quote from: ZiG on July 02, 2014, 05:24:42 PM

Quote from: Biodom on July 02, 2014, 04:23:09 PM

Quote from: visdude on July 02, 2014, 03:21:14 PM

Quote from: grkmec on July 02, 2014, 02:56:33 PM

Would this PSU support (3) S3's:

EVGA SuperNOVA 1300G2 ATX12V/EPS12V 1300W 80Plus Gold Power Supply 120-G2-1300-XR
http://www.amazon.com/gp/product/B00COIZTZM/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

Again, assuming that each S3 draws 390WAC at the wall, the EVGA SuperNOVA 1300G2 would give you around 19% headroom (81% load) with 3x S3s.

yes, but if you truly need 4 connectors per S3 for a mild overclock to 390W (I doubt it), then you need to have 4 more connectors (EVGA has 8 total). I solved it by ordering splitters: there is an awful lot of discussion whether splitters with 16awg wires are needed or 18awg is enough. According to this:
http://www.stayonline.com/reference-circuit-ampacity.aspx
each wire can carry 7amps, so for three wires it is 21ampsX12v=252W carrying capacity for 18awg wires in PCIe splitter. there is a debate how much wattage can plastic connectors take, but at least 18awg wires seems to be able to take it.

order 16awg from cablez here:
https://bitcointalk.org/index.php?topic=170332.msg7579936#msg7579936

or 18awg
http://www.amazon.com/StarTech-com-PCIEXSPLIT6-6-Inch-Express-Splitter/dp/B004NNTVT6/

6-pin PCI-E standard specification is 75W...could sustain up to 125W...BitMain is trying to fit these specs with 2 6-pin PCI-E ...IMHO...

ZiG

KnC is pumping 420W through ONE PCI-E while cooling the plastic part of the connector with a fan.
I wouldn't try it, unless it is a high current connector.
~180-200W should be OK in most cases from a reliable PSU because this is what a single blade of mildly overclocked S1 gets from PSU through the single PCI-E, but how reliable it would be-I don't know.
Edit: here is some discussion of limits:
http://www.jonnyguru.com/forums/archive/index.php/t-7212.html