I was looking for some upgrade advice. I am currently running a P4, 3.2ghz, 512k cache, socket 478 CPU. This chip was before the current numbering scheme from Intel. I was looking into the 3.2 dual core Intel 840 CPU. My biggest concern is: will I get a big enough speed jump that would warrant upgrading my CPU, motherboard and memory being both run at 3.2ghz? Would AMD X2 be any better? Any other suggestions?