The new one is better than the old one in everything, except in some game where the 7600 holds up a few more fps than the new card. Tho the processor and so on is much better !
I disagree. The new glossy screen does not trump the old matte screen by any means. Not because its glossy, as I kind of like that, but in that the colors look washed out at certain angles of viewing. That really sucks.
The processor jump from 2.33 to 2.4 is marginal at best. If you want to pay the extra bucks for the 2.8 Extreme, then you 'might' see a difference in certain apps, but don't count on it being this revolutionary change in speed at your desktop. When we get to the quad core state of things, then give me a call!
The 2600 video card is equal to or less in performance than the 7600GT from last year in most applications. In the apps where it might excel, its very marginal. Nothing you'd see in 'real life' differentiation. Bad choice from Apple to keep up with future software releases and maintain a nice resale value.
Really, the only thing that does stand out is the RAM bump from 3GB in the old to 4GB in the new. But even that won't stand out unless you have some really intensive multitasking going on. That really doesn't apply to most that would buy the iMac, so its a mute point really.
Oh, and the new keyboard. I WILL buy one of those if only to get the two additional 2.0 USB ports so I can free a couple up.
I'll be waiting until the next revision. Hopefully the new iPod will have more upgrades than the new iMac. Otherwise, Apple is in for some choppy waters ahead as the competition is getting fierce in the digital music department.