I'm upgrading from a creaky old AMD 6000 with 2GB RAM to a Intel Xeon E3-1230 3.2GHz Quad-Core with 8GB RAM and almost unlimited bandwidth. The site should feel a lot quicker, mainly on the forums.
It's a hefty upgrade but I do run other sites off the box.
Let me know if there are any problems.
I own this place, so you're my bitch.