Wtf... e6400 @ 400fsb slower then stock?

[shabby]

So i just overclocked my e6400 to 3.2ghz at 400fsb, then i started up a game and its slower then at stock speeds? I downclocked it back to the stock fsb and faster then at 400fsb.
Later i changed the fsb to 401 and the game runs like it should, much faster then at 266fsb.
What the fudge is going on?
Mobo is a p5b-deluxe with 2gb ballistix pc6400 ram.

 

[Avalon]

I think going between 400FSB and 401FSB you are changing memory straps, but I don't think at 400FSB your chip is supposed to perform below stock. That's weird.

 

[CurseTheSky]

Define "slower" in the game. Do you get bad frame rates? Bad load times? Other than FSB, what have you changed - voltages, memory timings, etc.? What kind of heatsink are you using?

Chances are, you're running into some kind of memory divider / asynchronus memory configuration that's causing it to seem slower. I know with my previous system things ran horribly if I changed certain things with the memory (which would allow me to overclock higher, but the computer would run horrible).

I would just go with 401+ FSB and be happy

 

[shabby]

Slower as in my framerate dropped by a 3rd, i only changed the fsb.
Well im not too worried, i set it to 401fsb and thats that. Now all i need is a 8800gtx likethe one in your sig