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Old 07-19-2010, 06:19 PM   #1
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Default How much power would 2 GPUs need?

As my title states, I was wondering how powerful of a PSU I would need to have the option to have 2 ATI 5850s running in Crossfire
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Old 07-19-2010, 06:28 PM   #2
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Default Re: How much power would 2 GPUs need?

The 5850 draws 151 Watts at max, so you'd need a 300W power supply for the cards themselves! What is the rest of the setup?
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Old 07-19-2010, 06:49 PM   #3
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Default Re: How much power would 2 GPUs need?

It sounds like 650W would be fine, but we won't know for sure until we know what the rest of the components are
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Old 07-19-2010, 09:39 PM   #4
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Default Re: How much power would 2 GPUs need?

Motherboard: http://www.newegg.com/Product/Produc...82E16813130223

Processor: http://www.newegg.com/Product/Produc...82E16819103846

Memory: http://www.newegg.com/Product/Produc...82E16820211409 (I'm think I might want to later buy another two sticks of these to upgrade to 8GB)

Power Supply: http://www.newegg.com/Product/Produc...82E16817139012
This is the one I was thinking of getting

The reason I made this thread was to see if I could upgrade the PSU and Mobo within budget so that I could have a single 5850 and then later get another and Crossfire them.
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Old 07-21-2010, 11:53 AM   #5
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Default Re: How much power would 2 GPUs need?

So I guess my question is will a 650W PSU support a processor that I'll probably unlock into a 4 core and overclock, 2-4 sticks of RAM, and 2 5850's
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