MasterRye,
I am not an expert in that area, but your system seems top-notch, there is little you can do to boost performance. In fact, I would be surprised to hear of any choke or loss attributed to your hardware.
Page memory is amazingly slow compared to RAM -- and in my experience, I have never seen a machine using more than 2GB of RAM. Even if you do allocate more to paging, you could only decrease performance if you have any affect at all.
If you have extra money you want to throw at the problem, you could invest in dual handoff, a more expensive switch, or something along those lines. Otherwise you should be good to go... start worrying about your NEXT machine
Thanks,
-Luke