Wow is very graphics and RAM intensive. neither of which Imacs are good for. Also all of the parts are notebook parts, which are much more expensive and harder to replace. You really need a tech for IMacs

A year ago when I was selling them the biggest model I think came with 2 gigs but the computer was $1,999 and was a 24 in. All of the lower models have 1 gig. To run Wow imo you need minimum of 2 gigs and a good graphics card, which Imacs don't come stock with. Also the RAM they use runs in pairs only, so in order to upgrade from 1 gig to 2 gigs, you need to buy 2 1 gig sticks, which are about 100-125 dollars a piece.

Also if you use Ventrilo, macs don't work well with it.

I personally don't like Mac, but would consider owning an Imac for purely for non-gaming.