Radeon crossfire?

Hi, I'm pretty noob when it comes to hardware but not software. I've been a gamer but for the most it has always been consoles and not PC. My current PC setup is:
CPU: Intel Core 2 Duo E8400 3.00GHz
RAM: 2gb Ram
SOUND: Onboard
GFX: Onbard
OS: Windows 7

I kinda on a budget and was thinking a crossfire of average Radeon cards. I was thinking Radeon 1gb 4670 x 2 or Radeon 1gb 5570 x 2. I wanted to know which setup would equate to which single cards? Reason being I don't want a single card, I know that sometimes having two cards can be cheaper then having a single card and even more powerful.
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  1. Well my native screen resolution is 1920 x 1080. I was told that it is best to game at native resolutions. My screen is a Samsung SyncMaster 2233, 21.5 inch. I'm not sure about my power supply, it was while back since I got it but I'm pretty sure it was one of the top end that give plenty of power. Money wise? I'm from Australia so its kinda hard for pricing (sorry). I'm willing to spend around $220. The 5570 is $111 each so two of them would be $222.

    EDIT: Oh I see. Thanks for the heads up. So what is difference from the PCI x1 and PCI x16? And which one would I plug the GFX card into?
  2. ^Your board has only one slot which can take a gfx card(PCIE x16).

    Crossfiring those cards isn't a very good idea.

    Best cards in your budget is HD5770 which will perform better than both of the cards you've mentioned for CF.

    Check the PSU...
  3. Thanks for all your help. I think I will probably go with the HD5770 than.
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