A Memory Speed/FSB Speed question

Here's the story, I have an OC'd QX9650 running on a XFX 790i (unlike EVGA, the XFX boards are stable ).

I OC'd the FSB to 1500MHz (still working out some stability issues beyond that, shoud have some time to work on it this weekend), to reach a CPU speed of about 3.45 GHz.

I currently have 2GB 1333 DDR3 RAM with default timings (i'm at work, i forget what they are off hand). Would I be better off reducing the FSB back to 1333Mhz, or sticking with the mild OC? (or getting liquid nitrogen and getting the FSB up to 2666? ).

Keep forgetting the FSB needs to be divided by 4...

I'll leave it as is then, dropping from 1333MHz down to below 800 will be far more likely to cause me to lose speed. Hopefully, I'll have time this week to get my OC finished...