SLI with two Radeon video cards

By lightfoot1974
Jan 31, 2007
  1. Hi guys,

    I am probably being thick as I am definately not techincaly minded.

    I bought another ati radeon x800 to go on my asus a8n sli deluxe main board thinking i could make use of the sli, having found that neither card seems to have a slot for the little connector thing that came with the mainboard I am wondering if i have two cards that are not sli compatible? Does anyone know?

    I installed the second card after swapping the dual video card board round to dual video instead of single. I plugged an extra power lead into the socket next to the top gfx card on the mainboard, the computer boots up, works for about 3 mins and then crashes.

    Please someone tell me if I am wasting my time and need to buy two sli compatible cards.
  2. kitty500cat

    kitty500cat TS Evangelist Posts: 2,154   +6

    The ATI Radeon X800 should work fine in a single card configuration, or even dual card (running dual monitors). You cannot have both cards powering one monitor, though, as in SLI; because ATI cards don't support SLI (only nVidia cards do). I'd actually recommend going with a single card setup, though, cuz one of the following cards should be equal or better than two x800s.
  3. dmill89

    dmill89 TS Guru Posts: 475

    ATI cards require a crossfire compatible motherboard to work in pairs. Nvidia cards require an sli compatible motherboard to work in pairs. These two systems are not compatible with each other. You would need two Nvidia based sli compatible cards to work in pairs. However you would be better off with a geforce 8800 series card. you can buy one now and upgrade to sli later if you want by adding a second card.
  4. lightfoot1974

    lightfoot1974 TS Rookie Topic Starter


    Great, thanks for your input guys. Might as well buy a decent Nvidia card then!

    Back to ebay for my x800s!
  5. kitty500cat

    kitty500cat TS Evangelist Posts: 2,154   +6

    Yeah. Personally, I'd get an 8800GTS (one of the ones in this list).

    Let us know if you got any more problems ;)

    Regards :)
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