June 10, 2011, 6:54 PM — While the standard-configuration models of Apple's iMac offer impressive performance, if you choose a couple of build-to-order (BTO) options, you can have the fastest Mac to date that you can order from Apple--a 27-inch iMac with a 3.4GHz Core i7 quad-core processor and a 256GB SSD.
This ultimate iMac is a BTO model that takes the top-of-the-line standard configuration iMac--a $1999 27-inch 3.1GHz Core i5 quad-core model with a 1TB 7200-rpm hard drive--and replaces the processor and hard drive. The upgrade to a 3.4GHz Core i7 adds $200 to the price. And the 256GB SSD is an extra $500.
The previous Speedmark 6.5 record holder was a build-to-order Mac Pro with a 3.33GHz Xeon Westmere six-core processor, 8GB of RAM, and a price of $4074. Add a 27-inch Apple LED Cinema Display and the price jumps to $5073.
We took our previously tested BTO 27-inch 3.4GHz Core i7 iMac with a 1TB hard drive and 4GB of RAM ($2199) and popped in the SSD from our BTO 21.5-inch 2.7GHz Core i5 iMac. (I say that like its easy, but as I've pointed out in a previous article, opening up an aluminum iMac and installing components is not for something you want to enter into lightly.) Once the SSD was installed, the 27-inch 3.4GHz Core i7 iMac with SSD was simply on fire--figuratively--besting the previous Speedmark 6.5 performance record holder in 14 of the 17 individual tasks that make up our test suite.
The only tests where the ultimate iMac failed to outperform the Mac Pro were with processor-intensive tasks, where applications that can take advantage of the extra cores found in the Mac Pro benefit. Using Hyper-Threading, the Mac Pro was able to present itself as a 12-core system to applications like Handbrake, Cinebench, and MathematicaMark--the iMac maxed out with eight virtual cores. The Mac Pro is 13% faster in Handbrake, 21% faster in CineBench CPU, and 28% faster in MathematicaMark.