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Power Supply Unit (PSU)

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vuzedome:
Alright, here's some question for all you PSU gurus out there.
Actually I just wanted to hear the opinions of others.

Modular or non-modular?
Single rail or multi-rail?
Bigger or smaller fan?
And if you all would like to debate on, which brand?

I'm using this as a reference in buying a unit, but I know my wattage requirements so I'm neglecting that question.

And for those who use units with up to the kilowatts, do share a bit more on that.

nstgc:
Modular: It'll make life so much easier
Multi-rail: The entra rail helps keep the voltage in your video card stable.
Bigger fan: Keeps it cooler.

Go to Google and see which PSUs are recommended for DFI motherboards. Those tend to be the best.

As for brands, Corsair, OCZ, and PC Power&Cooling make good ones. Check the list of recomended PSUs for DFI boards though.

I use a 620W Corsair PSU. I'm not sure what the model number is, but it has two rails, is modular, and has a 180mm fan.

Mag-X:
Not sure if it matters to you or not, but I'll be buying a power supply soon with a single 12v rail. Apparently, PSUs with split 12v rails won't be able to handle Fermi cards.

http://www.semiaccurate.com/2010/03/01/fermi-power-requirements-leak/

Viseroid:
Modular or Non-modular?
-It depends on how much stuff you're going to connect and how much you feel like organizing your cables. I don't have a modular and it's fine since I use every cable except 2 PCI-E that I tuck under behind my motherboard tray.

Single or multi-rail?
-Depends, sometimes a good single rail will beat out a dual rail. However, I think most of the stuff nowadays is dual rail and are SLI-ready. Multiple rails will allow for better stability, read some reviews before you buy.

Bigger or smaller fan?
-A bigger fan won't have to turn as fast and would then make less sound. The general rule with fans is the bigger, the better, and the quieter.

Which brand?
I use a Corsair 750TX 750W. Corsair is a pretty good brand and I think I remember it handling test loads up to 1000W. Of course when you go that high you start losing efficiency, also why not just buy a 1000W :P?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006&Tpk=tx750w%20corsair

Viseroid:
http://www.jonnyguru.com/forums/showthread.php?t=3990
This is a pretty good FAQ for PSU rails. Definitely worth a read when shopping for a new PSU.

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