I have a P2 266@350 the multiplyer is unlocked. I can raise the voltage up to 3.00 but no more on the board. the multiplyer goes from 2 - 4.5 I have had it at 66*4.5(300), 75*4.5(337), 83*4(332) and 100*3.5(350) benchmarking the 350 is the best because of the memory at 100. Does anyone know whats the max i can get out of this without spending much money. It runs very cool at 350mhz using 2 case fans, thermal compound and a good cpu fan. I can buy a new one thats not the point its in a 3rd machine on my home network. I just want the most out of the old thing it still can run quake 3 with my viper550.