Both the nForce 4 boards definitely have the upper hand in the Quake 3 engine based shooter.

UT2k4

The nF4 Ultra-D board takes the lead and has about a 4% lead over the Gigabyte SLI board in a very CPU bound test.

Half-Life 2

Very close score between the nF4 Ultra-D and the K8T890. The SLI board trails behind a bit once againn.

DOOM 3

Like with both UT2k4, and DOOM 3, scores remain very close between the nF4 Ultra-D and the Soltek board but the Gigabyte board is about 4% behind.