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Ridiculous lag with 4870

By aznn3rd
Dec 31, 2009
  1. Today my Diamond 4870 512mb came, but to my surprise, it performs little better than my old 3850 256mb. When I try to max out MW2, it lags like crazy and when I optimize settings, it tells me to run the game at 1024x768.

    What might be the problem? I have the newest drivers, and I did a PSU calculator, which put me at 308 watts, which my computer should be able to handle
     
  2. Ritwik7

    Ritwik7 TechSpot Chancellor Posts: 1,672   +9

    Optimized Settings are of no use. Invariably they will set your system to a resolution far lower than what your card can handle. The HD 4870 should be able to comfortably max out Modern Warfare 2 at 1280x1024.

    What PSU do you have? Did you uninstall all previous drivers before installing the new ones?
     
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