Best way to find out your maximum OC is to first turn down your HTT frequency, and your ram divider, so your ram runs at the slowest speed. Then you kick up the voltage on the CPU and then keep trying higher and higher speeds. Once you find out a good speed, do the opposite with your ram and see what you can get on the ram. But remember if you increase the FSB you need to increase the voltages, loosen ram timings, and lower the HTT frequency. It may sound like a lot but it gets easier as you do it more.