The gap between the Radeon X1800 XT and the GeForce 7800 GTX diminishes almost to zero in the second test. In 1600x1200 resolution it is no bigger than 0.4fps, for example. This scene requires high math1ematical performance from both pixel and vertex processors while the fill rate is less important due to the small size of the scene.
The GeForce 7800 GTX 512 is still ahead of the Radeon X1800 XT, but not quite confidently. The Radeon X1900 XTX pushes it down from the top position altogether. This test isn’t ideal for the new series of graphics cards from ATI, but the complex lighting and shadowing of the scene is where the Fetch4 feature supported by the Radeon X1900 cards can prove its efficiency.
The Radeon X1800 and X1900 series cards profit by the ring-bus memory controller when full-screen antialiasing is turned on. Here, the Radeon X1800 XT can’t beat the GeForce 7800 GTX 512, but is a mere 10% behind it in 1600x1200 resolution. The Radeon X1800 XL overtakes the GeForce 7800 GTX, leaving the GeForce 7800 GT behind in 1280x1024 and higher resolutions.
As for the Radeon X1900 XTX, it enjoys an even heftier advantage than in the pure speed mode. Despite the small difference in the clock rates, the Radeon X1900 XT is noticeably slower than the senior model exactly when FSAA and anisotropic filtering are on, although it delivers enough performance to catch up with the GeForce 7800 GTX 512.