I am trying to overclock my P4 2.4 (18x133), everything went smooth upto FSB 143, but faced a strange problem at 144. The memory bandwith scores and memory benchmarks suddenly drop about 10% according to sisoft Sandra. Temps are around 47 degrees celcius. System is solid at 143 and 144. Mainboard is Asus P4B533. I am using Kingston PC2700 modules. Are there any workarounds ?