What is reporting the speed drop? Have you got Cool 'n' Quiet disabled as this might be lowering the multiplier.
Originally Posted by Mersiles
When I raise FSB to 222 my speed goes from 2.6 to 2.2 when i reboot which is 200mhz LOWER then my stock speed. But when i drop it to 220 it goes back to 2640mhz, could it be my ram? I have 2gb of corsair value select PC3200.