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Richard Burns Rally - Harwood Forest (Transparency SSAA), 1024 x 768
Single
Multi
45 (4x SSAA 16x AF)
77.71 (4x SSAA 16x AF)
186 (4x SSAA 16x AF)
.
58 (4x SSAA 16x AF)
111.646 (4x SSAA 16x AF)
211 (4x SSAA 16x AF)
Richard Burns Rally - Harwood Forest (Transparency SSAA), 1280 x 960
Single
Multi
34 (4x SSAA 16x AF)
56.402 (4x SSAA 16x AF)
124 (4x SSAA 16x AF)
.
43 (4x SSAA 16x AF)
84.721 (4x SSAA 16x AF)
176 (4x SSAA 16x AF)
Richard Burns Rally - Harwood Forest (Transparency SSAA), 1600 x 1200
Single
Multi
26 (4x SSAA 16x AF)
42.275 (4x SSAA 16x AF)
87 (4x SSAA 16x AF)
.
34 (4x SSAA 16x AF)
64.689 (4x SSAA 16x AF)
130 (4x SSAA 16x AF)

It's safe to say, only a pair of GeForce 7800GTX has the processing power to run with transparency antialiasing in this game. Even then, the SLI setup barely manage to pass the minimum 30 fps mark at 1600 x 1200. The single GeForce 7800GTX fares worse, pushing about the same frame rates at the slightly lower resolution of 1280 x 1024.

These older games rely mostly on textures rather than shaders. So, let's see how SLI fares in newer, shader laden games.

F.E.A.R - Performance Test, 1024 x 768
Single
Multi
36
82.017
187
32 (4x AA 16x AF)
78.795 (4x AA 16x AF)
222 (4x AA 16x AF)
.
33
97.051
291
33 (4x AA 16x AF)
82.188 (4x AA 16x AF)
238 (4x AA 16x AF)
F.E.A.R - Performance Test, 1280 x 960
Single
Multi
32
91.018
246
29 (4x AA 16x AF)
61.588 (4x AA 16x AF)
153 (4x AA 16x AF)
.
31
90.75
247
29 (4x AA 16x AF)
62.996 (4x AA 16x AF)
152 (4x AA 16x AF)
F.E.A.R - Performance Test, 1600 x 1200
Single
Multi
33
75.502
165
19 (4x AA 16x AF)
43.824 (4x AA 16x AF)
104 (4x AA 16x AF)
.
31
76.891
169
15 (4x AA 16x AF)
46.32 (4x AA 16x AF)
163 (4x AA 16x AF)

In F.E.A.R, we can see a pair of GeForce 7800GTX in multirendering mode behave in a similar manner to a pair of GeForce 6600. SLI can only push slightly higher frame rates at 1024 x 768, no more. In higher resolutions, there's little difference between SLI and a single card. It looks like, SLI can only work its muscles with textures and not shaders - let's look at other games to be sure.

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