Originally posted by: KingofFah
Still not getting the whole "buy a 1kw PSU for SLI," when you can just buy two 500W PSU's that do the same job.
The PC P&C 1kw PSU has 12 volt rails of 18,18, and 36. Both the 18 12 volt rails are supposedly for the CPU, while the one 36 is for "graphics and drives.'
The multi-rail thing really tended to hurt performance anyway; many overclockers didn't find the same stability on the "lower-amp-more-rails" PSUs than the high-amp-single-rails.
So if I have two Ultra X-connect 500w PSUs with 34amps on the 12 volt rails, one for CPU's, other for video cards that comes up to a much cheaper solution (about 80$ from FS FT).
If the 34 amps for the graphics won't work for the GPUs, then the third rail (36amp) on the PC P&C won't work either. Then I can always take one adapter from the CPU PSU (2x 6-pin adapters on each card, right?) and split the load a little more. Either way, I see no reason to spend 500$ on the PC P&C PSUs. Even then, if you wanted to absolute ensure operation, get a third 500W PSU bring the total up to 120 with 3 rails each 34 amps. Definitely much better performance than the 500$ one.
I do agree that it will probably be pretty rare, since most people don't have cases that support two PSUs and water cooling probably will be required.