It started with the Xeon, now it has been announced for the P4. What is it? It's Intels EM64T technology. I think its the equivelent of a 64-bit Athlon but I'm not sure.
Right now the Fastest CPU out from intel is the P4 3.46GHz 1066MHzFSB 2MB L2 Cache Extreme Edition chip for $1,077 at www.newegg.com
. But now it looks like it will be beaten.
I looked into the P4 w/EM64T and found This information.
I thought It might be intersting to see so I posted it. It is said to run with Windows 64-bit.