Crossfire: Can I?

[yamigata]

I'm thinking about putting a couple video cards into my machine to make a crossfire setup. Here's what I have:

Motherboard http://www.newegg.com/Product/Product.aspx?Item=N82E16813128387

PSU http://www.newegg.com/Product/Product.aspx?Item=N82E16817153039

And two of these if I decide to go through with it http://www.newegg.com/Product/Product.aspx?Item=N82E16814150504&cm_re=radeon_5670-_-14-150-504-_-Product

Is there anything I'll need to know before taking this step? I've never done crossfire or SLI before so this is all new to me and I want to make sure I do it right. Thanks in advance for any advice offered.

Edit: I'm running Windows 7 64bit

 

[megamanx00]

Yes you can crossfire just fine with that motherboard and PSU, though really that PSU is way overkill for only two lowly 5670s. Rather than two 5670s, you could get similar or better performance from a single 5770, which would also be cheaper.

PowerColor AX5770 $119.99
http://www.newegg.com/Product/Product.aspx?Item=N82E16814131330

You could then add a second 5770 latter for even more performance. If you have $160 to spend on GPUs though (that's what two of those 5670s would cost) you could step up to a 6850 for a little more which is faster than a 5770 and faster than two 5670s in CF

 

[shrkbay]

^ +1
here's an older thread

http://www.tomshardware.co.uk/forum/283849-15-single-5770-5670-crossfire

everyone was for single 5770

 

[yamigata]

Well one detail I left out was that I already have one 5670 card which didn't cost me anything, so I was going to get another card to take advantage of the crossfire capabilities of my motherboard.

What about getting a 5770 and pairing it up with the 5670 that I already have?

 

[yamigata]

OK I think I have decided to grab this http://www.newegg.com/Product/Product.aspx?Item=N82E16814150515 and not bother with Crossfire for now. I'm concerned about the length of the card, I hope it's not too big for my case.

 

[Guest]

One card is always better than two if it gives you the same performance because you won't have to worry about bad scaling in games and all that stuff.