processor speed vs cores ?

Logic can take advantage of mutliple cores. So therefore I recommend the 2.66 ghz quad core system. Logic can't use more than 4GB Memory Ram because of the 32bit limit. The dual core isn't a bad choice too, but I'd go for the Quadcore because the future is multicore .

 

Re: Ram limits. Just because a program can only use 4 gb of RAM doesn't mean you shouldn't get more. If the program uses 4 gigs, still get 8, so your OS and any other programs have another 4 gigs to play around with.

But you might not want to get the 8gigs from Apple

 

I didn't say buy 4 gigs , I just said the limit is 4gigs so he can decide for himself. But you're right about your point.

 

Definitely focus on multi-core. Also the best way to future proof yourself.

 

Go with the more cores. Logic can use all those cores.

Maybe Logic can only use 4GB. But I'll bet you a lot that you will also be running other software at the same time as Logic. For example Mac OS X with it's large disk cache and buffers and so on.

That said 4GB is likely enough unless you run large sample libraries. Then buy 8GB. I think to make a big difference you need to double the RAM size Buyt e computer with a minimum amount of RAM and then buy the upgrade RAM from a third party. Apple charges to much for RAM.