basically...the RAM should be at a 1:1 Ratio with the FSB...as your RAM is DDR2...example
380FSB should be at 760 Mhz on the RAM
But i'm not sure, what sticks do you have as your 3 Gb of RAM...3 1Gbs?
I'm not really sure how that works.
By the way, what cooler you using for your CPU