Croosfire requirements?

[Muckie]

I intend to buy one ATI Radeon HD 3870 for my computer upgrade. In that upgrade i'll be buying everything new. With that in mind i intend to buy another ATI Radeon HD 3870 later on.

However looking at PSUs, many of them come with only one PCI-E power connector, even the ones stated as 'Crossfire Compatible.'

So to power two ATI Radeon HD 3870 graphic cards will i need a PSU with two PCI-E power connectors or will one be sufficient? Or can you buy splitters? Or are there other ways around this?

Hope you can all understand the problem. Thanks in advance for the help!

[wyz135]

if like this, get a PSU with 650W which stats CrossFire or SLi ready, they usually have lots of 6pin PCIe connectors

[Sunny]

Yeah you could initially use splitters to power the other card but I would go about getting another PSU with the other six pin connector as it might not get enough amps from the splitter to run at full capacity.

Your card should come with the splitter cable for 2 molex connectors to a 6 pin connector.