My best advice is to just experiment with your memory settings. Don't forget to benchmark after every change- sometimes the FSB will be higher, but due to the slower timings required, your performance may drop. I've found that there aren't any magic numbers, and what works for one system might not work for another. Your best bet, if you don't want to take the time to experiment is to find someone with the same mobo/memory, and do what they're doing. You may also be limited by your CPU speed, so If you have stability problems after you change your memory settings, try backing of your multiplier by a notch or two. If you still have stability problems, it's the memory, and you should try different settings. Oh, and remember to record what settings you use. You wouldn't want to have to do this all over again after resetting your CMOS.