As far as upgrades go, the top-of-the-line 15-inch MacBook Pro's makeover is far from extreme. But we're not going to complain if Apple chooses to gently goose the processor speed a little bit without expecting a dime more for the effort.
Aside from the slight boost in processor speed from the model it replaces, the 2.53GHz 15-inch MacBook Pro, the rest of the new 2.66GHz MacBook Pro's specs remain identical, including the unibody case, ports, bus speed, hard drive capacity and more.
When comparing just the rated processor speed specification, the new 2.66GHz Core 2 Duo processor is a little more than five per cent faster than the 2.53GHz Core 2 Duo. That's almost exactly the difference in Speedmark scores between the new and old top-of-the-line 15-inch MacBook Pros.
The biggest improvements were, of course, in processor-intensive tests like our Cinema 4D Render test and Compressor MPEG Encoder test, where the new 2.66GHz MacBook Pro shaved four or five seconds off the time of the 2.53GHz MacBook Pro. Our test showed smaller improvements in tasks involving both processor and hard drive, and no difference in strictly storage-related tasks. The 2.53GHz model was a touch faster than new 2.66GHz model at Quake, but only by 1.5 frames per second.
The hard drive in the new 15-inch 2.66GHz MacBook Pro appears to be a bit zippier than the 17-inch 2.66GHz MacBook Pro, with the new 15-inch model beating the 17-inch model by a few seconds in several of our tests.
The full-sized, faster spinning hard drive in the new 2.66GHz 24-inch iMac kept that system ahead of the new 2.66GHz 15-inch MacBook Pro in all but the most processor-intensive tasks and our Quake 4 test.
And as we've seen before, the unibody MacBooks hold their own very well against its Pro siblings. The new 15-inch 2.66GHz MacBook Pro posted about a 10 percent faster Speedmark score than the 2.4GHz MacBook.
Except for a minor boost in processor speed, the new 15-inch 2.66GHz MacBook Pro is identical to the 15-inch 2.53GHz MacBook Pro it replaces. The minor speed boost, without a similar boost in price, can only be good news. And if you bought the 15-inch 2.53GHz MacBook Pro when it shipped in February 2009, you won't have a bad case of buyer's remorse.