huh. so a celeron d is or isnt dual core, and neither is a pentium d?
i dont get it!
Pentium D's are dual core cpus, but celeon D's are not. As chris13th said, "Intel's old naming scheme was not exactly consumer-friendly."http://en.wikipedia.org/wiki/Celeron#Celeron_D
although if you have a 478 socket, (just like me) you're out of luck on just a cpu upgrade. The Pentium d's and Pentium dual-cores are LGA 775 cpu's. http://en.wikipedia.org/wiki/Pentium_Dual-Core
To get one of them you'll need an Lga 775 motherboard that can accept them. Although just like the 478 cpu, the LGA 775 cpus will soon die out due to the new LGA 1156