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Upgrade to which PSU?

post #1 of 7
Thread Starter 
I'm looking to upgrade my PSU soon cause i'm going to buy another X1900 and go crossfire, the PSU I have now is only a single rail

Heres my options
http://www.newegg.com/Product/Produc...82E16817103438

or
http://www.newegg.com/Product/Produc...82E16817703002

Which one will be the best to go with over all?
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post #2 of 7
If you have the money, the choice is obvious.
A good psu (OCZ 520 Powerstream) with a single rail should be able to handle dual ati's.
Your current P&C510 should still work fine btw
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post #3 of 7
IF you're going to spend >$400 on a PSU, then you could also consider the 1,000W version of PC Power & Cooling. Is only $20 more right now:
http://www.newegg.com/Product/Produc...82E16817703003

Either of the PC Power & Cooling PSUs will give you enough power to hook up anything you want, with a power bill to match

They likely both solid PSUs. The Enermax has a total of 38A on its 12V rails (Max 456W / 12V = 38A), which should be enough imo.

According to their website, the 850 W PCP&C has a total of 54A on its 12V rails, and the 1,000W has 66A. Those last two should be enough for anything.

In the end, the question is: are you willing to spend $200 extra for a surplus of power? Also, the PCP&C's are HUGE: 230 mm (more than 9 inches!) long. The Enermax is 2 inches shorter... Definately should be taken in mind...

Good luck
    
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post #4 of 7
the enermax isnt a good enough unit for x1900 crossfire, and the 850SSI is just pure overkill


look into the Fortron Epsilon PSU's, specifially the 700w unit found here:
http://www.newegg.com/Product/Produc...82E16817104015


don't let the low price fool you, its one hell of a PSU, has madd voltage rails (FOUR 12v rails at 15amps each!), and is made by a very reputable manufacturer
    
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post #5 of 7
Somehow overlooked that one

Take a serious look at the Forton one.. reputable brand indeed, and definately enough power.
    
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post #6 of 7
Quote:
Originally Posted by Chozart
Somehow overlooked that one

Take a serious look at the Forton one.. reputable brand indeed, and definately enough power.
Thats a good psu for gaming, but with only 15amps on each rail, overclocking the cpu may tax that rail too much.
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post #7 of 7
if you got cash to spend, then you may wanna take a look at this one as well:

http://www.newegg.com/Product/Produc...82E16817104126



but that is a little bit of overkill - i've seen nothing but good about the fortron though, and unless you're doing clocking with sub-zero stuff, then 15a on the CPU rail should do just fine, especially with 3 other rails providing power to everything else

and if you need even more power, grab a molex from another rail and put a molex to 4-pin or 8-pin P4/EPS 12v connerctor adapter on it, and you have two 15a rails feeding the CPU
    
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