I am impressed with the performance of the new Macbook pros. I write my own
java based visualization software and have a performance
test suite. I downloaded the performance test suite via gmail in an apple store and ran the test to see the performance of the new macbook pros.
The new 2.3GHz Quad-core Intel Core i7 Macbook pro ran my cpu intensive tests about 30% faster than my 6 month old 2.66 GHz Intel Core i7 Macbook pro. And the old Macbook pro was ridiculously fast.