As I mentioned in the general build thread, My TOP-900W is on its way out, after many years of good service.
I replaced my worn-out 8800GT cards with a pair of EVGA GTX 460 in SLI. I'm running that with a trio of hard drives, a Q9650 quad-core processor, and two optical drivers. I'd like an actual modular PSU (i.e. one with only modular leads, rather than any hardwired ones), since that will let me keep my current arrangement of cables. I've got a EVGA 780i motherboard, though I don't think that makes too much of a difference.
So far, I've gotten two very good suggestions: a Silverstone ST1000
and a SeaSonic X750
I'm leaning towards the ST1000, since I'm more familiar with Silverstone, and I'm not too
worried about sound (though quieter is nicer, of course). If there are any other suggestions among rare fully-modular PSUs that could cover a pair of those cards and a CPU, I'd definitely like to consider them. My budget is $150 to $250 (I'm shooting for $200), since I've the year's resumed and I've gotten my TA job back.
Review that was linked in the Computer Build thread recently:
Go with the SeaSonic (just don't lose your spare cables).
I'm trying to comparing the outputs on different lines. My motherboard's own lead-ins are pretty typical (again, 780i), so I doubt that'll be the deciding factor.
I'm also looking at the Corsair models...basically just the two 850W models. One is rated as 80% (or above).
You really can't go wrong from any of those four manufacturers, so at this point it comes down to personal preferences or even looks.
My guess is all of the PSUs with the same wattage rating should have the same number of rails at similar amperage. If not, lean toward one with more current since it should give you the most overhead.
A more important issue is that, apparently, the Seasonic has no 24-pin lead output. It uses a 20+4 instead. It shouldn't make a difference, since you're left with at least 4 PCI-E outputs. The Silverstone has a 24-pin output, which is what my motherboard uses (as well as pretty much any recent motherboard, I think).
Barring any other issues, I think I'll go with the ST1000 (place an order sometime tomorrow). If there are any other suggestions, though, please keep them coming.