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Upgrading PC Power Supply

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I just bought a Geforce BFG 6800 Ultra on a sweet deal. All is great except that it requires 480 watts and my power supply can only sustain 300 watts.

So what do I need to know to buy a reliable power supply of 450w - 480w off pricewatch.com

Size? Motherboard compatability?
 
There's like different kinds (size) or something:

AT / ATX / Mini-ATX

Um...isn't ATX the most common nowadays? Just go for that, I would say.

As for reliability, I can't help much there as I don't know good companies.
 
its generally better to go with a better brand name than just wattage numbers with regards to powersupplies.. because even though they may be rated high, the power delivery might not be so good..

personally i use Antec power supplies... not sure which other brands are popular nowadays
 
You want the best? Get a PC Power & Cooling 510 watt, which is probably equivalent to everyone else's 600w+ However, at $240, it's a little pricey.

Otherwise, I'd go with an Enermax, Antec, or Fortron Blue Storm, which is currently probably the best deal to be had:http://www.newegg.com/app/ViewProductDesc.asp?description=17-104-934&depa=0

Fortron supplies parts and even whole units to companies to rebrand as their own. PC Power & Cooling uses a lot of their parts, so you know their a good brand.
 
Aren't all power supplies basically the same size for each type?

i.e. all ATX are about the same size, all AT are the same, same for microATX?
 
Get a BTX PSU with at least 25A on the 12V rail for max. future proofness.

I suggest buying the Tagan 420 or 480W if you can find them, or the Antec Truepower 420 or 480.
 
I bought an Allied 400w for $30 a year ago. Works fine. Has serial ATA power plugs too. Whereas a $70 "good" ~400w Antec my brother bought from CompUSA didn't. It did have flashing blue lights though :lol.

You SHOULD worry about the quality of your PSU, but there are many good brands out there and you should be fine with any of them. Make sure it has serial ATA power though.
 
Do you guys know of any Power supply that uses a Power Logic-branded fan? It really matters much to me, brand or wattage does not matters.
 
The power rating isn't accurate for all brands.

Antec is a good, but expensive brand. I got an Antec 550 W Truepower last summer, but I didn't look into cheaper brands. It runs my system without any problems:

Abit IC7 MAX3
P4 3.0 C (currently at stock settings, I haven't tried OCing with my new RAM)
2048 MB of PC 3700 RAM (512 MB x 4)
BFG 6800 Ultra OC
3 disc drives
floppy
160 GB SATA HDD
6 80mm case fans
 
Antec is always a good recommendation. :) Here's one good source for a primer on power supplies in general, and recommendations:

Silent PC Review

Also, what kind of PC are you using? Is it DIY, Gateway, Dell, HP, etc? This can, in some instances, make a difference- irrespective of the form factor. Some older Dell's and Gateway's used proprietary pin-outs on their 20-pin connectors.

I ran into this problem recently when I upgraded a friend's Gateway with a new 6800 video card and some more dreadful RDRAM. His PS was only pushing 250 watts. While I'm sure it was probably conservatively rated, I still didn't feel safe pushing it so I recommended a PS upgrade.

He wanted to stick with Gateway for that part, so he ordered a 450 watt Startech. As it turns out, the Startech was a standard ATX PS. Only a minor amount of gerry-rigging was necessary to get it fit in the case.
 
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