That depends on a lot of technical factors, but more importantly, are you prepared for the work involved?
Are you comfortable removing processors from their sockets, exercising anti-static precautions, and re-seating the Mac Pro's massive heat sink assembly?
I've heard the Mac Pro heatsink is tough to get off/on. I wouldn't think the socket removal/anti-static part would be that hard as long as the OP generally knows what he/she is doing.
Well I've replaced several CPUs on various server grade workstations all of them pc boxes and a simple bios update to the mainboard will do most of the times as long as the CPUs are the same socket. But with apple you never know. Gulftowns and Nehalems share pretty much the same architecture
While the architecture will remain largely unchanged, there will be a die shrink was well as a microcode adjustment on the 2010 Mac Pros to accommodate the new chips. Its been said they will use the same socket, but as with the '06 MP's compatibility with the 4-core Xeon 5355s, the paper data is just anecdotal until someone does a real test.
Aint the chips like 1 grand a pop.
Why spend 2 grand to upgrade cpus on a machine. Probably better to sell it and buy a new one.
More than that at MSRP. Apple gets a discount and passes that on to customers. The actual retail of the new Xeons are much higher. The Xeon 3.33 for instance has a recommended MSRP of $1600. I imagine the newest hexacore will not be a whole lot different.
Source: Intel's Website
That is a Dual Processor XEON for the 8-core models! x55xx are DP, x35xx are single socket processors!
And no, Apple does not pass their discount on to the customers. The opposite is true! You pay considerably more for a processor upgrade from Apple than you would do if you get them elsewhere!
so its cheaper to just get the whole new machine.