BEHOLD - 5 Box setup, on one Comp. What parts do I need to run each aplication of wow at MAX settings?

[NightFire]

I have a FX60 dual core OC to 3.2GHz
2 Raptors in RAID 0
3 GB RAM
8800GTX 512MB

A single client will run ~60-70 FPS in almost every situation. I start a 2nd client, I drop to ~40. This is on a 22" monitor. Since 2.4 released, my fps is worse.