One of my co-workers has a new lap top with an dual core amd turion (sp?) in it, onboard graphics (Nvidia I believe, up to 256 mb shared), 1 gb ram....and he plays the latest doom game (doom III?), F.E.A.R. and Oblivion with no lag. He said that he's extremely impressed with how that processor and onboard graphics works! He's also a super computer geek, and knows more about computer related things than I would (took an online test about a year ago, I got 39 questions out of 100....he got 99/100!!!!!!).
I'd have to consider if upgrading an entire computer just for the processor would be worth whatever your loss is going to be (difference in what you sell your current lap top and what you buy the new one for). Maybe $100-$150, I'd upgrade, but anything over $200, I'd hold out a bit in hopes that the prices would drop somewhat!
Not a lot of info, but hope it helps!
War produces veterans, wounded both physically and mentally. They have sacrificed for us.....and it is now our job to help these veterans, as they have already helped us in ways we will never know, in ways that we cannot fathom, and in ways that we take granted every day.