i am currently run p3-800@1000 with 41 pci bus speed stable for 2 month, and nothing have burn yet! but i now i just installed the network card and i think my network card can not handle the 41 pci bus speed, so i must put the 133 fsb to get the normal pci bus! yeah, i can push to 1066 mhz (1.85v) with cpu temp 30 c when idle, but the system is freeze when i play the game! however the system is ok if i am not play a game (like surfing, irc , icq etc ), now actually i never play the game! i just use my system for browsing the net, email, make the work etc. is it can harm my system if i keep on the 1066mhz??