Our investigations reveal that some drivers from ATI also produce a slightly lower total score on
this new build of 3DMark03. The drop in performance on the same test system with a Radeon
9800 Pro using the Catalyst 3.4 drivers is 1.9%. This performance drop is almost entirely due to
8.2% difference in the game test 4 result, which means that the test was also detected and
somehow altered by the ATI drivers.
why does ATI detect 3DMark?