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Is my power supply big enough?

Last response: in Components
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November 14, 2010 9:07:48 PM

I have a Corsair TX750. My specs are the following:

Lian-Li PC-K62 Dragonlord
AMD Phenom II X4 965 Black Edition 3.4GHz C3 Stepping
MSI 790FX-GD70
XFX Radeon HD 5870 1GB GDDR5 (Slight overclock 900/1250)
4GB G.Skill Ripjaws DDR3 1600MHz (Maybe 8Gb Soon)
Corsair TX750
Western Digital Caviar Black 1TB (Maybe another HDD later)
Sont Optaric DVD-Burner
Acer H233H 23" 1920x1080
Razer Lycosa
Logitech G9

I was thinking of overclocking to about 3.8Ghz on the processor. I know I can do that okay.

But I also wanted to pair up my 5870 with another and go crossfire.

My power supply is rated for Crossfire/SLI and I have a Crossfire mobo. (Quad SLI/CrossfireX actually lmao)


Can I safely do both with 5870 Crossfire and overclocked processor. Or should I do one or the other.

Thanks for any help/input

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a c 164 ) Power supply
November 14, 2010 9:12:25 PM
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you will be fine

Test System Specs
Core i7 Test System Specs
- Intel Core i7 965 Extreme Edition (Overclocked @ 3.70GHz)
- x3 2GB G.Skill DDR3 PC3-12800 (CAS 9-9-9-24)
- Asus P6T Deluxe (Intel X58)
- Seagate 500GB 7200-RPM (Serial ATA300)


November 14, 2010 10:56:31 PM

Thanks for the diagram. So that test system was an overclocked i7 extreme and they swapped in different video cards to test?

I have the 125w Phenom not the 140w so will that give me headroom to do a 3.8Ghz Overclock AND crossfire 5870's? Ill probably buy another 1GB XFX 5870.

And on top of that maybe two harddrives? Standard SATA Western digitals?

I just want to make sure before I do this..
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a c 164 ) Power supply
November 14, 2010 10:59:26 PM

correct , same system and they swapped out video cards. you will have no issues with your set up. the above power peaks are taking during a stress test. in gaming your power demands will actually be a bit lower.
November 22, 2010 3:35:08 AM

Best answer selected by solidsteel.
a b ) Power supply
November 22, 2010 10:26:04 AM

This topic has been closed by Mousemonkey
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