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power supply question


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#1 RainbowSix

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Posted 20 September 2009 - 12:13 AM

What power supply wattage would I need for these?

AMD Phenom II X4 955 3.2GHz
ASUS M4A79XTD motherboard
Dual ATI Radeon HD 4890s in crossfire
4 sticks DDR3 RAM
ASUS Xonar DX
AZiO AWD102N PCI Wireless Adapter
7200RPM HDD
5 case fans (one 250mm, the others 120mm)
front bay card reader
DVD burner

the newegg power supply gave me a result of 832W. Another one gave a result of 580W. I'm not sure which is correct.
[ Antec 1200 v3 | Gigabyte GA-890FXA-UD5 rev. 3.1 | AMD Phenom II x6 1090T (overclocked to 4GHz) | Corsair XMS3 4x4GB DDR3 1600 | COOLER MASTER Silent Pro 600W & Visiontek Juice Box 450W | SAMSUNG 470 Series 64GB SSD | WD Caviar Black 640GB & Samsung Spinpoint 2TB HDD | 2x XFX Radeon HD 5770 in Crossfire | SAMSUNG 22X DVD±RW | Microsoft Windows 7 Professional 64-bit]

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Stringfellow Electronics

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#2 DJBPace07

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Posted 20 September 2009 - 01:54 AM

According to most suggest power supply suggestions for a dual HD 4890 setup, they need 600W. Keep in mind that 600W is an absolute bare minimum, so I would go for at least 700W. The CORSAIR CMPSU-750TX 750W or the CORSAIR CMPSU-850TX 850W would work. I would go for the higher wattage unit since there is only a $10 difference between the two.

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