i´ve seen ppl overclock the same cpu to over 4ghz with even worse coolers than me im running thermaltake ultra 120 extreme cooler and the cpu is 45nm and it is supposed to overclock really good.
intel dual core 8400 3.0ghz overclocked to 4.0ghz 4gb crucial 8500 1066mhz ram 8800 gts(g92 core) 512mb just wanted to brag about my system :P hope you all can run new runescape