High Quality AA and AF
In our High Quality tests we bump the Antialiasing (AA) and Anisotropic Filtering (AF) up causing the card(s) to be put under more load. This usually helps us remove the CPU limitation.
Turning on AA and AF no gains are seen in 3DMark05.
While our non HDR tests saw improvements our HDR tests with and with out AA and AF don't see any change.
PREY sees a really healthy gain on the X1900XT with AA and AF enabled but the rest of the cards find themselves sitting at the same speed.