We lowered the CPU multiplier to 12x and push the CPU and DIMM voltage to around 1.76V and 2.8V respectively. The highest FSB we could obtain was 250Mhz, using Twinmos Speed Premium. However, the system refused to boot into windows until we lower the FSB to 240Mhz. On the other hand, Kingston and Corsair were not as overclockable, we only manage to boot into windows at 225Mhz and 230Mhz respectively.