Question: What is the rest of your system? OS, RAM, etc.

I ahve 1 SATA drive in my computer and I'm thinking it is the only weak point in my setup. I have 4G system ram, nVidia GTX 280 w/ 1G RAM, Q6600 quad core (2.4GHz), Vista 32-bit, 2 17" monitors (going to one 30" soon), 500W power supply, and 1 SATA drive. I have seen a huger performance gain going from 5 individual directories down to just 1, but then bumped it up to 2 (1 main, 1 for 4 alts) and things are still good until I get around a lot of people in a major city. I use the Vista Performance Monitor and the only thing that gets maxed out is my hardrive (CPU never goes over 35% on each core, memory is good, etc.).

You think I should follow in your footsteps?