you might be able, I believe the mac pro uses the Standard LGA771 Xeon socket, but knowing apple, the CPU's would have to be in matched pairs, and the clock speed would have to match up with one of the possible current configurations available on that computer, and have a compatible front side bus, and the right socket. But, remember, these are Nehalem Xeons, they can out-preform an equally clocked Hex Core Opteron. they are pretty heavy duty cpu's

[quote|Chris Green]you might be able, I believe the mac pro uses the Standard LGA771 Xeon socket, but knowing apple, the CPU's would have to be in matched pairs, and the clock speed would have to match up with one of the possible current configurations available on that computer, and have a compatible front side bus, and the right socket. But, remember, these are Nehalem Xeons, they can out-preform an equally clocked Hex Core Opteron. they are pretty heavy duty cpu's[/quote]

you could try just getting the faster processors with bare minimum specs or just barely upgraded to save mo ey

or you could look at apples refurbished ones (the iPod I got looked brand new) or you could get an iMac like the 27" and a 3.06ghz duel core

[quote|Skippy722]you could try just getting the faster processors with bare minimum specs or just barely upgraded to save mo ey or you could look at apples refurbished ones (the iPod I got looked brand new) or you could get an iMac like the 27" and a 3.06ghz duel core[/quote]

Yes you could upgrade. The Apple Part Numbers are:

Processor, 8 Core 2.26 GHz 661-4997 2.66 GHz 661-5046 2.93 GHz 661-5047

if you want to shop for the CPU's. However, 1 CPU costs more than the entire machine :)

[quote|messagekeith]Yes you could upgrade. The Apple Part Numbers are: Processor, 8 Core 2.26 GHz 661-4997 2.66 GHz 661-5046 2.93 GHz 661-5047 if you want to shop for the CPU's. However, 1 CPU costs more than the entire machine :)[/quote]