KribiBench, Realstorm, XviD, WAV
A close-knit affair between three different chipsets (nForce3 250 and 250Gb share many common traits, however).
The Achilles Heel of the VIA K8T800 is highlighted by KribiBench v1.1. You can download the benchmark right over here. It would be interesting to see what users manage. An Intel Pentium 4 3.4GHz scores around 9FPS in this test.
A couple of seconds adrift of the top two is down to, in the main, the clock speed deficit created by the board's BIOS.
Pretty close bunching in our other media encoding test.