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X1900XT Crossfire overclocking

Discussion in 'Graphics Cards' started by 3xtemelyk3wl, 19 Feb 2006.

  1. 3xtemelyk3wl


    Joined: 18 Oct 2002

    Posts: 278

    Location: Northamps, UK

    Hey guys, I am running a crossfire setup of n X1900XT-X and an X1900XT Crossfire edition. Overclocking is proving trickier than I anticipated, as normal tools like ATi Tool don’t seem to work properly, and the ATi CCC overclocker is very restrictive. I have tried the "overclocker" tool to try and set higher clock speeds but the performance gains do not seem to tally with the clock speed adjustments, and there doesn’t seem to be a way to make the clock speeds apply automatically on windows start.

    has anyone with a similar system got any good tips or tricks? I’m on water-cooling so heat is not an issue (<45 degrees full load).

    Another annoyance is that all of the overclocking programs only show a single card, so I’m not sure if I’m overclocking one card or both! This certainly still is an immature technology...
  2. BigDom

    Wise Guy

    Joined: 30 Nov 2002

    Posts: 1,852

    Location: Birmingham

    Hehe it's not just Crossfire, I'm having EXACTLY the same issues with SLI at the moment. I've just done a fresh Install of XP so retesting everthing but in dual card mode my 3dMark scores went DOWN when I overclocked and as far as I could tell only one card was being overclocked.

    Doesn't help with your problem but it doesn't appear to be just a Crossfire problem.