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Good PSU? Good Price?

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December 25, 2007 5:23:46 AM

http://www.newegg.com/product/product.asp?item=N82E1681...

Basically im looking at this PSU because of the AMPs on the 12v rails plus the 8 Pin PCI-E connection as seeing as im going to crossfire to 2900PRO'S(then flashing them to XT, so it be like 2900XT's CF) for $330

2900 PRO
http://www.newegg.com/product/product.asp?item=N82E1681...

First im not very familiar with PSU's, Graphics is more my area, is this a good PSU? If not some one point me in the direction of one, i need one that will it not choke out seeing as the 2900's Require alot of juice!

any comments or recommendations would be appreciated! :) 

More about : good psu good price

December 25, 2007 6:18:10 AM

Xazax310 said:
http://www.newegg.com/product/product.asp?item=N82E1681...

Basically im looking at this PSU because of the AMPs on the 12v rails plus the 8 Pin PCI-E connection as seeing as im going to crossfire to 2900PRO'S(then flashing them to XT, so it be like 2900XT's CF) for $330

2900 PRO
http://www.newegg.com/product/product.asp?item=N82E1681...

First im not very familiar with PSU's, Graphics is more my area, is this a good PSU? If not some one point me in the direction of one, i need one that will it not choke out seeing as the 2900's Require alot of juice!

any comments or recommendations would be appreciated! :) 


The units from the 1st and 2nd tiers should work well for you. Coolermaster is not rated top quality.

http://www.xtremesystems.org/forums/showthread.php?t=10...

http://www.tomswiki.com/page/Tiered+PSU+Listings?t=anon

http://www.overclockers.com/articles1452/
December 25, 2007 6:25:56 AM

http://www.newegg.com/product/product.asp?item=N82E1681...

this one looks good, i like how it has the 6+2 PIN PCI-E connections

and ive heard great things about Enermax Galaxy. Seems like a decent price too $220 knowning it wont poop out on me is a good feeling.. thanks for those articles.
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December 25, 2007 6:44:09 AM

Xazax310 said:
http://www.newegg.com/product/product.asp?item=N82E1681...

this one looks good, i like how it has the 6+2 PIN PCI-E connections

and ive heard great things about Enermax Galaxy. Seems like a decent price too $220 knowning it wont poop out on me is a good feeling.. thanks for those articles.

check out the PC POWER & COOLING 750 QUAD silencer
its for 199 by now ...
December 25, 2007 7:15:37 AM

Actually all your key componets get there power from the +12v rail(s). The CPU, Video card, all your drives and your fans all run off the +12v rail(s) Having one extra powerful 60a rail is probally better than having multiple 'weaker' rails supplying power to the major hardware of your system. The PC Power and Cooling unit will spin those video cards just fine.
December 25, 2007 7:20:02 AM

you mind telling me how? im totally confused! i thought if i use 6 PIN + 8 PIN PCI-E both @18AMPS that be combined 36AMPS for one Card(2900PRO ive heard needs 25-30AMPS), so using the enermax Galaxy will divide the load equally to both cards? but how does the ONE @ 60AMPS (PC power and Cooling) work? sorry for my noobness :( 
December 25, 2007 7:41:07 AM

The Enermax Galaxy should work well too. I don't have a better explanation (a technical explanation) other than to simply say one behemoth 60a 12v volt rail can do as good a job or better than four wimpy 18a rails. It's a fact.
December 25, 2007 7:48:30 AM

Hmm ok, well If going off what you say, and newegg.com customers review, not to mention the price difference ($100) ill go for it!

Thanks for your help Badge really appreciate it! :D 
a c 144 ) Power supply
December 25, 2007 9:24:13 AM

I went digging around for 2900 power comsumption data. The 2900XT has a 6 pin and an 8 pin connector. By specifications, the 6 pin connector provides 7.5 amps; the 8 pin connector, 15 amps. A PCI-e 1.0 motherboard socket is designed to provide 7.5 amps.

The 2900 will work using the 6 pin connector (max 15 amps), but the ATI OC utilities will not. Using the 8 pin connector (max 22 amps), you can OC the card using the ATI utilities.

Apparently, you are not supposed to use both.

So two 2900XT's shouldn't pull more than about 45 amps - probably 35 - 40 amps at peak load.

And last, some PSU's advertised as multi-rail, probably aren't. My Antec 650 w TP3 (3 rails, each 20 amps max, 52 amps total) measures a short between any two 12 volt lines on any two cables. I just treat it as a single 50 amp rail.
December 25, 2007 9:59:15 AM

The PC P&C 750 will be all you need. It's a killer unit.

Merry Christmas
December 25, 2007 3:43:59 PM

Thanks yea i decided on it too, seeing as it does have x2 6 PIN PCI-E and x2 6+2 PIN PCI-E all @60AMPS be perfect for the 2900PRO CF, too bad its red :p  my case is black and thats going to stick out lol
December 25, 2007 4:51:18 PM

Yeah, The Corsair is a great at that price.
Of course the 750 PC P&C was actually down to $119 for BlackFriday.
Not likely to ever see that again in a while :>>
December 25, 2007 6:03:11 PM

Xazax310 said:
Thanks yea i decided on it too, seeing as it does have x2 6 PIN PCI-E and x2 6+2 PIN PCI-E all @60AMPS be perfect for the 2900PRO CF, too bad its red :p  my case is black and thats going to stick out lol


Buy it direct from PC Power & Cooling, black is available:
https://shop.pcpower.com/products/power_supplies/ultra-...
January 2, 2008 10:12:14 PM

chuckm said:
Corsair also has a 750 watt unit that is comparable to the Pc P&C unit, maybe a little cheaper. Merry Christmas
http://www.buy.com/prod/corsair-tx-750w-atx-12v-power-s...

This is not the same as the pc power and cooling, its is not as stable and the larger fans actually provide less cooling than smaller ones, since they can not cool all the small components, the PC Power and Cooling is the way to go, not the Corsair.
!