The 4800X2 is not yet considered an average PCs cpu, mine on the other hand.. is, I bought this thing back when it was 300 dollars, man do I feel stupid lol, well it's alright, I was allowed to brag about my sweet dual core system for the better part of a year after the X2 series was released, that is until Conroe came out and killed my fun. Lol no worries, 4800+X2 is still good, though you should consider saving up for an entirely new system and just forget upgrading your current one. Skt 939 is a dying breed