We used one very popular and one not so popular game, both with very nice graphics. Our MSI board was not able to reduce the FSB to 200MHz with the E6700 CPU, but you can expect it would have been slighly faster.
S.T.A.L.K.E.R. is still one of the most popular games and we chose to use it as a benchmark.
We see S.T.A.L.K.E.R. does not care so much about the CPU, but heavily relies on the graphic-card.