I want to build a second rig and would prefer it to be 64bit as opposed to 32. But price and upgradability are concerns. The price differance isn't too huge at about 150.00-200.00. I know AMD will still offer at least a few more 64bit CPUs fro socket 754. It is also my understanding that AMD will port the Athlon XP onto the K8 architecture, but only give it 32bit and this should be based on socket 754. SO has AMD stated how long they will keep the 754 socket alive, even if it is just with thier 32 bit "value" processor?