Does an Intel Pentium 4 3.2GHz Socket 478 CPU perform any better or worse than an Intel Pentium 4 3.2GHz Socket 775 CPU? Is there any benefit of one over the other? I realize they are not interchangeable within a specific motherboard. There does not seem to be any price differential. Has anyone published any stats on Socket 478 CPU's vs. Socket 775 CPU's? Thanks, Sandor

It's mostly about "future-proofing" your system. Obviously the 775 is newer and will likely be around much longer. It also has PCI-Express which is the newest platform for video cards. A lot of rumors are going around that PCI-E will replace the old AGP interface altogether, within a year. There are a few 478's that now have it. But the 775 will be around longer and the latest and future cpu's will be using it.

Yes. I hear that new socket-775 boards come only with PCI-Express and NO AGP slot. IF you upgrade your system it should be a socket 775 processor motherboard, but most chipsets for this socket dont support AGP.

Not true, there are 775 socket motherboards with AGP interfaces, but not from intel. EPOX is one of the manufacturers selling those kind of motherboards with the new 915 Chipset. About performance, I heard the P4 775 tends to heat less then the 478 socket processor.