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AMD 6950 Crossfired -> Recommended PSU wattage?

post #1 of 63
Thread Starter 
Planning on getting a 6950 (unless it gets close to the 7xxx series and the 7950 is a good deal on price)

If I get a 6950, I'll get a second one down the line to crossfire with, so I think I might as well buy a good enough PSU to handle it.


The current one I've planned for is a Corsair 650TX


According to an article on a power consumption test, 6950 2GB crossfired used 438 watts on load

a single 6950 2GB uses 297 watts


Do you think I would need at least a 750TX?



Reference:

GPU power test: http://www.tweaktown.com/reviews/3744/his_radeon_hd_6950_2gb_video_card_in_crossfire/index17.html
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post #2 of 63
Get a better CPU,Mobo, and RAM first but 650TX will handle them both. Although, I don't think it had enough PCIE connectors
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post #3 of 63
Thread Starter 
Quote:
Originally Posted by jamborhgini313;13497638 
Get a better CPU,Mobo, and RAM first but 650TX will handle them both. Although, I don't think it had enough PCIE connectors

It's not with my current pc, it's for this one: http://www.overclock.net/amd-general/1014383-sasha-amd-build-thoughts-tips-cost.html
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post #4 of 63
Go for a quality 1000W. PSU's are more efficient at half load right?
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post #5 of 63
Thread Starter 
Corsair 650TX http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005

1 x Main connector (20+4Pin)
1 x 12V(4/8Pin)
8 x peripheral
8 x SATA
2 x Floppy
2 x PCI-E
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post #6 of 63
If i were you, i would get the AX750, or AX850 if you have extra dough. Since you need a new PSU, then why don't just buy the modular one for cable management.
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post #7 of 63
Thread Starter 
Quote:
Originally Posted by damric;13497665 
Go for a quality 1000W. PSU's are more efficient at half load right?

Corsair 1000HX is what is availble

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139007

$230 is kind of pricey for me. The computer build is $1620 which includes AMD FX series, Crosshair V, 8gig DDR 3 1600, XFX 6950, Corsair 650TX, Raven RV02-E, Logitech G510, G35, G9x, and a 1TB WD 7200 drive
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post #8 of 63
Thread Starter 
Quote:
Originally Posted by Ocnewb;13497690 
If i were you, i would get the AX750, or AX850 if you have extra dough. Since you need a new PSU, then why don't just buy the modular one for cable management.

Looks nice, but would a 850HX be a better buy?

cheaper and same watt rating + more PCI-E cables and it's modular

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011
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post #9 of 63
Quote:
Originally Posted by Drybones5;13497710 
Corsair 1000HX is what is availble

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139007

$230 is kind of pricey for me. The computer build is $1620 which includes AMD FX series, Crosshair V, 8gig DDR 3 1600, XFX 6950, Corsair 650TX, Raven RV02-E, Logitech G510, G35, G9x, and a 1TB WD 7200 drive

Get the AX850, very good PSU and i'm sure it will power 2x 6950 just fine. I think it can run 3x of them easily. The AX850 is only around $160+ after rebate on Newegg (Link).

Edited: I think the AX is better. It's gold+ and it's full modular + flat cables.
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post #10 of 63
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Quote:
Originally Posted by Ocnewb;13497738 
Get the AX850, very good PSU and i'm sure it will power 2x 6950 just fine. I think it can run 3x of them easily. The AX850 is only around $160+ after rebate on Newegg (Link).

Edited: I think the AX is better. It's gold+ and it's full modular + flat cables.

Well if you thin the AX is better, what about AX750 instead, drop a 100 watts and save ...$10

I was calculating the price difference, it's only $10 lol
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