Lobby problems

[ojdr2001]

Can bench 3DMark01 with the followinf FSB:

Cars and Drags - 285/287
Nat - 280

But Lobbies at only 275 FSB. Higher than this always drops to win.

Any ideas of what can be wrong in my system?

P4C800 E DL
NW 2,8C with promy
2x256 corsair XMS 3500 2,2,2,5 3,2V 5:4
9800 XT water cooled, chilled water at 0ºC

Thanks for your help

[kromosto]

try decreasing your vdimm ofcourse if it is not necessary you to run 3.2v on it for that speed