3 Accounts, 1 Box equipment suggestions?

[Silly Gooooose]

You might be able to get away with 2Gb ddr with only three wow instances, but I'd still advise the following.

quad CPU + 4Gb DDR + 8k+ geforce (pref 8800) and at least the GT type, preferably GTS or Ultra. It's doable with 2Gb but 4Gb will just feel smoothly.

I 5-box on one pc, 2,4 Ghz quad / 4Gb DDR3 and 8800 ultra enforce. Asus motherboard/graphic card (I always try to use the same brands as much as possible, Asus never failed me.) And it runs smooth, when I had 2Gb ddr it was still doable, even with 5 windows. But towns were nearly impossible to get through, I had to walk past AH one by one, now I do still experience some lag at some points, Auctionhouses, but at least I can get past with all 5 together, with some lag.

If you're looking for minimum requirements, 2Gb should be enough though. If you lag in towns doesn't mean you lag in instances/pvp, it's usually far better when it matters anyhow.

I Don't think you need that much, but more is always better,

I run 3 normaly, and 5 when my second computer decides it doesn't want to work for the day on:

2 gigs of ram (2 runs all 5 fine, on min settings)
8400gs 51mb ()http://www.newegg.com/Product/Produc...82E16814136025)
AMD athalon 3200+ and combo CPU that came with it, I have no idea about it's specs. (http://www.newegg.com/Product/Produc...82E16813135058)
Old HD from an old comp.
350W power supply

I built this cheapy comp for about 250$ with some old parts from an old comp (case, HD, monitor, keyboard and mouse)

It's meh in main cities when I run all of my chars there, but when It is only running 2-3 WoWs it does just fine, never have a FPS drop from my 15 FPS back, 40 FPS front (though i never have 1 up front, I control it all from my main comp.)