Basically the one concern I had was whether or not a certain distro would support my hardware. From the 4 processors...
The support for multiple processors lives in the kernel, not in your linux distro. Basically, you're either going to have to find an already compiled kernel that supports your hardware with SMP (Symmetric Multi-Processors) enabled, or you'll need to compile your own kernel to make use of the multiple procs.

Here's some more info

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