Ok... so here it is.

I'm running an AMD X2 6000 (3ghz dual core), 4GB Ram (Crucial), an XTX 8800GT with 512mb ram, a DFI Infinity NF570 M2-G mainboard, as you may suspect, the mainboard uses the nForce 570 chipset... onboard sound, vista 32... Dual monitor, a 22" LCD @ 1680x1050 and a 19" LCD @ 1280x1024. Nothings overclocked from the manufacturers spec (The video card is OC'd from the chipset spec, however that was done at factory.)

And I'm just not impressed with how wow runs at all, a single instance is far from unplayable, in fact I can run three copies without any problem with the out of focus windows getting a locked in 15fps and the in focus swinging anywhere between 15 and 40fps. I'm running wow from a hybrid single/multi install. The data folder is shared, the interface folder is shared, the game executables are not, the WTF folder is.

If I try and run 4, it is playable, however the sound goes to complete shit... so I guess CPU upgrade is in order and/or I'm looking at not 5 boxing on the one system.

I am sorely tempted to try a hardware sound card as I understand the onboard sound cards put a significant drain on the system resources.