Ok, as promised, Supreme Commander benchies.
Can't remember the exact graphical settings but, as we're primarily comparing CPU speeds here and the graphics settings remained constant, that shouldn't be too much of an issue.
First up is the E8400 at stock 3Ghz (333x9):
1280x1024:
SupComMark (sim) : 9043
SupComMark (render) : 7528
SupComMark (composite) : 16571
FPS: calls[ 12966] min[ 10.02] max[ 65.31] avg[ 35.289]
1680x1050:
SupComMark (sim) : 9049
SupComMark (render) : 7136
SupComMark (composite) : 16185
FPS: calls[ 10645] min[ 12.76] max[ 53.25] avg[ 29.174]
1920x1200:
SupComMark (sim) : 9019
SupComMark (render) : 6811
SupComMark (composite) : 15830
FPS: calls[ 9494] min[ 12.38] max[ 40.55] avg[ 25.204]
Now the same E8400 at 4Ghz (445x9):
1280x1024:
SupComMark (sim) : 9252
SupComMark (render) : 7944
SupComMark (composite) : 17196
FPS: calls[ 15525] min[ 16.43] max[ 70.65] avg[ 41.118]
1680x1050:
SupComMark (sim) : 9258
SupComMark (render) : 7412
SupComMark (composite) : 16670
FPS: calls[ 11742] min[ 16.34] max[ 55.30] avg[ 32.281]
1920x1200:
SupComMark (sim) : 9227
SupComMark (render) : 7089
SupComMark (composite) : 16316
FPS: calls[ 10395] min[ 14.94] max[ 52.40] avg[ 27.847]
Despite the composite score only increasing around 3-4%, the average FPS increases between 10-16% which isn't bad when you consider the graphics system is identical. The biggest gains are in the minimum frame rates, which demonstrates how CPU bound the game gets at the extreme when there's a lot happening on-screen.
Hope this is of use to someone
