In our SLI tests, we ran Doom 3 again but this time in High Quality mode and at high resolution for a look at where each of these platform stands in this gaming scenario.

Benchmarks & Comparisons with Doom 3 - SLI Dual 6800GTs in Action!

Doom 3

Doom 3 is an OpenGL based game that uses extremely high-detailed textures and a ton of dynamic lighting and shadows.  We ran this benchmark using a custom timedemo with Doom 3 set to its "High-Quality" mode, at a resolution of 1,600 x 1,200 with 4X anti-aliasing and 8X anisotropic filtering both enabled at the same time.  (Note: Doom 3 enables 8X anisotropic filtering automatically when set to "High Quality" in the game's control panel.)

On a side note, since the i955X board we have doesn't support SLI mode, it is not represented in the scores below.

A virtual tie is displayed here with the Asus P5ND2-SLI Deluxe showing a slight edge over the reference NF4 SLI Intel Edition board, but stepping in ever so slightly behind the AMD based NF4 test-bed.  If you can discern the differences in game play with these relative score variances, we would suggest you step away from the system and get outside for some fresh air and sunshine...