PSU help

No, look for an Antec or XClio PSU as they're much better build quality and have better ampage on the 12v lines which is more important than wattage.
 
The PSU list released a while ago and kept alive by PC Eye:

Good:
Antec(except Smart Power models) - Astec - AOpen - Channel Well - Coolermaster - Enermax(except Liberty models)
- Enlight - Fortron Source (Sparkle) - HEC - OCZ Technology - PC Power & Cooling - PowerMan
- Seasonic - SilverStone - Sunbeam - Tagan(older models) - TTGI/SuperFlower - Vantec - Zippy / Emacs - Verax - XCLIO - Zalman
- Corsair - Ultra

Bad:
Allied - Antec Smart Power models seem to lack(recommend True Power or NeoHE) - Aspire - CoolMax - DEER - Enermax Liberty models - ePower - EYE-T
- KingStar - L&C - Linkworld - Logisys - PowerMagic - PowerUp - Powmax - Q-Tec - Raidmax - Skyhawk - Star
- Turbolink - ThermalTake(complaints heard some good some ???) - Rosewill - SilenX ??? ToPower(newer models)
 
the Coolmax / CR-550 / 550-Watt I posted above has 35amps on a 12volt rail, but no pci-e connector. Does that mean it wouldnt be able to power the card?
 
when a power supply has 2 12volt rails, does that mean I can add the amps of the two rails? for instance one has a 18 and 20amp 12volt rail, does that mean 38amps on the 12v rail?

Im having a hard time finding one under 100$ and around 500watts that has a single 12v rail with atleast 30 amps and a pci-e connector
 
type in google:450W PCI Express-compliant system power supply 12V 30A,from: Antec(except Smart Power models) - Astec - AOpen - Channel Well - Coolermaster - Enermax(except Liberty models)
- Enlight - Fortron Source (Sparkle) - HEC - OCZ Technology - PC Power & Cooling - PowerMan
- Seasonic - SilverStone - Sunbeam - Tagan(older models) - TTGI/SuperFlower - Vantec - Zippy / Emacs - Verax - XCLIO - Zalman
- Corsair - Ultra

(prettymuch a summazriation of all posts)

and see what ya get. try tigerdirect.com too.
 
dan_foster11 said:
when a power supply has 2 12volt rails, does that mean I can add the amps of the two rails? for instance one has a 18 and 20amp 12volt rail, does that mean 38amps on the 12v rail?
Click to expand...
Typically not. In most cases, a total output rating will be indicated. This may be a wattage rating for all the +12V rails, which you can divide by 12 to get the amperage rating. It's usually something a little less than what you'd get by just adding the two rails.

Im having a hard time finding one under 100$ and around 500watts that has a single 12v rail with atleast 30 amps and a pci-e connector
Click to expand...
A single +12V rail is not necessary.

would that psu power the 8800gts? the card requires a 12v rail with 28amps, but that one has 2 12v rails at 18 and 20amps.
Click to expand...
Yes. So will this: http://www.tigerdirect.com/applications/searchtools/item-Details.asp?sku=ULT33136&SRCCODE=ULTRA1 (arguably better value, and certainly a newer design, and meets your desired single rail design), or this: http://www.buy.com/retail/product.asp?sku=203270716&loc=101 (much better quality, and actually a single rail unit despite the labelling)
 
dan_foster11 said:
thanks!

So in other words, I can get away with a PSU with 2 12volt rails with 18-20 amps each?
Click to expand...
It's the combined rating that's the real concern. That X-Finity, for example, has a total of +12V@35A. In practice, though, most PSUs with 2 18-20A rails should provide the total +12V@28A you're after.
 
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