Hi ihave an imac 2.66 intel core two duo.it stops runninig and crushes after working for an hour and it doesnt starts if it doesnt get  cold

my imac crushes after running for an hour . it doesnt start unless it gets cool .but it crushes again and again

I love the portability my powerbook gives me. You can use a PB in your setup. You can run an external monitor for either PB or MBP. You can node. Universal Binary menas it is an application which has the components written for both PPC and Intel chips-so you don't need to do conversion. Nodes won't require you buy a nother license. so the answer is down to how much the 2 upgrades and 1 crossgrades will set you back vs how much use you'll get out of them. IMO the iMac is inexpensive (I mean that in a good way-worth hooding on to). Maybe just look at a refurb PB unless you really have the extra cash.

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