Thanks I appreciate everyone's comments, I don't know much about hardware besides how to go to newegg, sort by price, and pick one by a good company with good reviews

So I really appreciate and will use all the help. I agree I am not going to put so much money into it, if in 6 months a new architecture is coming out.

I am going to re-evaluate tonight and I will post what I come up with.

I am also running a Asus 8800 GTX graphic card, and at 4 WoW clients my PC starts bottlenecking at 90+%, with 5 it is almost always at 98%/100%.
And my FPS starts taking a nosedove with around 20'ish in Shatt, and low 30's in Battlegrounds. When alliance AV zerg first approaches sometimes it takes 10-15 seconds before they show up, until then everyone is invisible i can see the shadows and target though.

My goal is to get my main char fps to around 50, with the 4 slaves maxfpsbk set to 25.

Anyway thanks again everyone and I will post up tonight the parts I am switching to.