Games Benchmarks - OpenGL


Doom 3 "Turkey Baster"

Our Doom 3 "Turkey Baster" test uses an extended sequence from the Alpha Labs 1 level and is intended to be used in Doom 3's Ultra mode as a slightly heavier stress test as this level has a few areas where texture swapping will occur on 256MB boards.




Doom3 "Turkey Baster" (FPS) 640x480 800x600 1024x768 1280x1024 1600x1200
X1800 XT 140.2 141.6 140.7 121.2 95.9
X1800 XL 137.4 135.5 120.5 90.4 68.7
X850 XT PE 139.2 130.2 122.5 92.1 70.2
X800 XT 139.2 132.7 110.5 82.8 62.8
 
X1800 XT % Faster than: 640x480 800x600 1024x768 1280x1024 1600x1200
X1800 XL 2.0% 4.5% 16.8% 34.1% 39.6%
X850 XT PE 0.7% 8.8% 14.9% 31.6% 36.6%
X800 XT 0.7% 6.7% 27.3% 46.4% 52.7%
 
X1800 XL % Faster than: 640x480 800x600 1024x768 1280x1024 1600x1200
X850 XT PE -1.3% 4.1% -1.6% -1.8% -2.1%
X800 XT -1.3% 2.1% 9.0% 9.2% 9.4%

Under this Doom 3 test the extra 512MB of RAM doesn't appear to be making too much of a difference as the performance gain the X1800 XT has over the X850 XT PE is in a similar range to other titles that we've seen so far. In this instance the X1800 XL's performance is up to 9% higher than the X800 XT, showing that the improvements made to the architecture have carried across to Doom 3's utilisation patterns, but not necessarily to the same degree as the X850 XT PE is slightly faster.




Doom3 "Turkey Baster", 4x FSAA & 8x AF (FPS) 640x480 800x600 1024x768 1280x1024 1600x1200
X1800 XT 137.7 124.8 101.8 72.2 52.7
X1800 XL 120.9 99.6 79.0 55.8 41.7
X850 XT PE 124.6 104.9 85.2 61.7 46.1
X800 XT 114.7 94.3 75.8 54.6 41.1
 
X1800 XT % Faster than: 640x480 800x600 1024x768 1280x1024 1600x1200
X1800 XL 13.9% 25.3% 28.9% 29.4% 26.4%
X850 XT PE 10.5% 19.0% 19.5% 17.0% 14.3%
X800 XT 20.1% 32.3% 34.3% 32.2% 28.2%
 
X1800 XL % Faster than: 640x480 800x600 1024x768 1280x1024 1600x1200
X850 XT PE -3.0% -5.1% -7.3% -9.6% -9.5%
X800 XT 5.4% 5.6% 4.2% 2.2% 1.5%

With 4x FSAA and 8x AF enabled the X1800 XT is, as we'd expect, still fastest, but curiously not to the same degree as we've seen in other cases with these settings. This is underlined by the case that the X1800 XL has a very slim performance margin over the X800 XT.




Doom3 "Turkey Baster", 6x FSAA & 16x AF (FPS) 640x480 800x600 1024x768 1280x1024 1600x1200
X1800 XT 136.5 122.8 100.8 72.5 53.0
X1800 XL 112.5 92.8 73.6 52.6 34.6
X850 XT PE 98.1 77.9 60.2 42.3 28.0
X800 XT 88.4 70.0 53.7 37.9 25.4
 
X1800 XT % Faster than: 640x480 800x600 1024x768 1280x1024 1600x1200
X1800 XL 21.3% 32.3% 37.0% 37.8% 53.2%
X850 XT PE 39.1% 57.6% 67.4% 71.4% 89.3%
X800 XT 54.4% 75.4% 87.7% 91.3% 108.7%
 
X1800 XL % Faster than: 640x480 800x600 1024x768 1280x1024 1600x1200
X850 XT PE 14.7% 19.1% 22.3% 24.3% 23.6%
X800 XT 27.3% 32.6% 37.1% 38.8% 36.2%

With 6x FSAA and 8x AF enabled the performance differentials are about where we would expect them, given the previous patterns. In this case we see that the X1800 XL has as much as a 39% performance improvement over the X800 XT. Curiously, the result at 1600x1200 for the X1800 XT here is actually faster than at 4x FSAA & 8x AF, despite more FSAA and texture samples being calculated in this case.