Serious Sam II - Greendale (HDR), 1024 x 768, 32 bit
7800GTX TOP
7800GTX
X1900XTX
Serious Sam II - Greendale (HDR), 1280 x 960, 32 bit
7800GTX TOP
7800GTX
X1900XTX
Serious Sam II - Greendale (HDR), 1600 x 1200, 32 bit
7800GTX TOP
7800GTX
X1900XTX
Serious Sam II is the only game in our benchmark suite that supports both HDR and AA at the same time. We can see that enabling AA with HDR come with some penalty, though not really that much at 1024 x 768. It's only at higher resolution that the Radeon X1900 XTX begin to falter. Its still somewhat playable at 1280 x 960, but you can forget about 1600 x 1200.
With just HDR, the Radeon X1900 XTX is faster once we get above 1024 x 768, while the GeForce 7800GTXs are faster at 1024 x 768. That lead allowed the Radeon X1900 XTX to push enough frame rates close to the 30 fps minimum mark at 1600 x 1200, while the GeForce 7800GTX can only offer comparable frame rates at 1280 x 960. Clearly, the Radeon X1900 XTX is faster with HDR here. With future games making use of HDR, this bode quite well for the Radeon X1900. You can still use HQ AF and at least 4x AA with HDR enabled, if your frame rates were high enough to begin with.
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