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Trying to Crossfire 6870s, will this 650W PSU suffice?

Last response: in Components
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July 12, 2012 6:54:25 PM

I have a 650w Corsair power supply (http://www.newegg.com/Product/Product.aspx?Item=N82E168...). I am wondering if I will be able to crossfire 2 6870's or if I will need to upgrade my power supply. Any help would be greatly appreciated.

My system is as follows:

AMD FX 8120-125w 8 core CPU
Mushkin 60Gb Sata III SSD
500 GB HDD
16 GB Corsair Vengeance 1600 RAM
A cd/dvd drive
And I currently have 1 HIS Radeon 6870, trying to see if I can get another.

Thanks!

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a c 158 ) Power supply
July 12, 2012 7:11:10 PM

A crossfire of HD6870s requires a 650W PSU with at least 38A on the 12V rails and four 6-pin PCIe power connectors. The TX650V2 has 53A on the 12V rails and is electrically sufficient for the CF, however it only has two 6+2 pin PCIe power connectors. You can either use two molex to PCIe adapters or and 8-pin y-splitter (i.e. 8-pin splits to two 6-pin PCIe connectors).
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a b ) Power supply
July 12, 2012 7:12:33 PM

you need 2 more 6 pin connectors to fit 2 6870's
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July 12, 2012 10:50:44 PM

Thank you very much!
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July 12, 2012 10:51:00 PM

Best answer selected by Xanatos108.
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