I just noticed that my cards don't run at the same clock speeds. GPU1 runs at 850 stock but GPU2 is always a steady 400. How do I get my card to do it's job? It shouldn't be underclocked when I'm playing games so what's the deal here? I have two ASUS EAH5870's and they are at stock speeds at the moment.
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  1. Do you have the latest VGA driver installed? (with the latest Catalyst profile apps)
    Also post your system specs.
  2. ASUS EAH5870's Crossfired
    AMD Phenom II x4 965
    8 GB of GSkill DDR2 1066 RAM
    GIGABYTE GA-MA790GP-UD4H AM3/AM2+/AM2 AMD 790GX AMD Motherboard

    I'm using the new 10.10 drivers, ccc, and profile apps
  3. Do both cards run at normal speeds simultaneously ?
  4. Crossfire engages only in full screen mode also, have you been playing in full screen ?
    Does gpu-z and CCC show that crossfire is enabled ?
  5. Yeah I even have the logo in the corner to show when crossfire is being used. I run all games in full screen at 2048 x 1152.
  6. Yes it does support 8x bandwidth
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