I am currently considering purchasing a new mac pro. I am currently looking at the single CPU quad-core Mac Pro. My question is, since i really don't want to pay the premium of 1k for the upgrade to the 6-core, would i be able to replace the CPU from the nehalem to a westmere in the future? Should i consider the 8-core option? Your advice on this matter will be greatly appreciated.
By the time you will reach that bridge, you won't cross it anymore because your Mac Pro will most likely be out-dated and unsupported by Apple.
I remember how Apple treated the 2006 Mac Pro, and I know that I won't buy one of their "professional" workstations anymore. Just to mention three things Apple did that ticked me off:
1. Snow Leopard does not run in 64-Bit mode on this 64-Bit Workstation. But Windows and Linux do.
2. Official, 64-Bit Windows is NOT supported on this 64-Bit workstation. But, of course, 64-Bit Windows runs perfectly on this computer - Apple just doesn't make it easy for you to install it.
3. The nVidia 8800 GT was the last graphics card that Apple made available for this machine. Later nVidia and ATI graphics card would not be compatible on a machine that was not even three years old by the time the graphics cards were released. How "professional" are three years of support for a high-end machine, I'd like to ask? In Germany, you have not even written it off from taxes in three years.
You can get more SUPPORTED life out of a "dull grey box" than you can get out of a "awesome, magical, beautiful, revolutionary PRO" machine from Apple. Sad but true.
And before the Apple thought police shows up here: No, you do NOT buy a Mac Pro to replace a full computer after a few months with a new one. You buy a workstation class machine because you can upgrade the CPU and the graphics card when needed. Well, at least in the PC world you can. And you also buy a 64-Bit workstation to run 64-Bit operating systems on it. Not a 32-Bit kernel pretending to be a 64-Bit platform. And, yes, there ARE performance differences and YES, you pay the additional money because you want or need that performance difference.
But, well. They've stopped selling their server hardware. They'll probably stop selling their workstation hardware soon, too.