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Help deciding on a PSU?

post #1 of 13
Thread Starter 
First off, would a 850W PSU be able to handle 2 video cards? Just thinking about the future. (This PSU will be for a future rig) I can't decide between these 2, I was hoping you guys could help me.

http://www.memoryexpress.com/Product...29514(ME).aspx
or
http://www.memoryexpress.com/Product...24569(ME).aspx

Thanks!
McLovin
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McLovin
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post #2 of 13
What two video cards?

A pair of 8600GTs could run on a 300W.

A pair of GTX480s needs an 850W.

Most modern dual GPU setups work fine on a 650W.
post #3 of 13
850 is plenty for 2 480's or 580's overclocked.
I would go for the Professional one that is fully modular myeslf.

Go with what ever Phaedrus tells you... he knows PSUs.
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Angry Monster
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post #4 of 13
wow. About same price, then ax850 is the way to go. It can do 70a on 12v so it should be fine for dual GPUs in most cases.
post #5 of 13
Both of those PSU's have 70 amp on the 12 volt rail

both have a 140mm fan

the HX is simi modular, meaning all cords but the main 24 pin cord can be detached from the PSU

The AX is fully modular, all the cords can be detached including the 24 pin

some people prefer modular for ascetic reason mostly, others do not, more connections to come loose
Pa's Puter
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post #6 of 13
I would go for the AX850 it's made by seasonice and as stated above has 70a on a 12v rail. The Tx is made buy channel well which is a little cheaper but still good.
My System
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My System
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post #7 of 13
Quote:
Originally Posted by Phaedrus2129 View Post
What two video cards?

A pair of 8600GTs could run on a 300W.

A pair of GTX480s needs an 850W.

Most modern dual GPU setups work fine on a 650W.
This.

Unless you plan on running some high end cards in SLI or CF, 650 will do. I'd get the 650TX, or 650TX V.2. Whichever is cheaper. No use in spending money for power you'll never use.
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post #8 of 13
Thread Starter 
Thanks for the info, I will be getting 1 GTX570 to start with, then maybe another in the future.
McLovin
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i5 2500K @4.5ghz 1.26v Asus P8Z68-V PRO GTX 570 Twin Frozr III G.Skill Ripjaws X 2x4Gb 1600mhz 
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Crucial M4 64Gb/WD Caviar Black 1Tb Windows 7 64 bit Samsung 2053BW Corsair AX850W 
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NZXT Phantom Red 
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McLovin
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Crucial M4 64Gb/WD Caviar Black 1Tb Windows 7 64 bit Samsung 2053BW Corsair AX850W 
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NZXT Phantom Red 
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post #9 of 13
Quote:
Originally Posted by Oblivion77 View Post
Thanks for the info, I will be getting 1 GTX570 to start with, then maybe another in the future.
Then get a 750W unit, 850W will be unnecessary. Hell even 750W is a bit over the top.
post #10 of 13
I've been told here (by OCN PSU guru TT) that the HX's has better performance characteristics than the new AX's that are replacing them. Either would be a fantastic PSU and you would never notice the difference, but thats what I am told....
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