Crossfire power supply question?

[Hags]

I recently built my pc and didnt think I wanted to crossfire but now I want too. BUT!!! I got a psu with only 2x 6 pin connectors and 4870 take 2. So my question is can I use 1 6pin on each card and use a 6pin to 2molax connector on differnt molax lines on each card? The only issue i see is not enough amps but if that is the only issue what harm would it cause ?? (poor performance??) Thanks in advance

 

[Bluescreendeath]

What is your PSU? (Info on wattage, amps, and if possible amps for wattage output)

A 4870 needs two connectors or it won't boot. Two of them needs 4. Overloading your PSU can kill your computer.

 

[jsc]

The only issue i see is not enough amps but if that is the only issue what harm would it cause ??

Probably none. But you'd get a lot of random reboots during periods of heavy 3D loads - games.

 

[Hags]

My psu is earthwatts 650 so it should have enough juice but I'm not sure heres the link http://www.newegg.ca/Product/Product.aspx?Item=N82E16817371015

 

[dirtmountain]

It should work with no problems, split the 6 pin and the 8 pin to each GPU using the 12V3 rail and a molex connector to each card off the 12V2 rail. I'd usually rather see a 750w with the 4 PCIe connectors for crossfiring 4870s, but i wouldn't replace the 650w Earthwatts in your case.
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