I have 512 meg of pc 3500 DDR433 ram in my Abit IS7 with a P 2.4.  I would like to change my ram I have 1 gig of Geil pc 3200 ddr 400 ( both in dual channel ). When i replace the memory I just removed the old and put in the new.  This made my cpu run at 1.2, not sure what i am doing wrong.  Someone said clear the cmos and replace ram then boot up  is this correct.  When I put the old ram back in everything was fine.

Ahh what it sounds like is before you had an unusual FSBRAM ratio... check the multipliers it probably lowered your FSB