This new iMac is essentially a MacBook Air without a PCI SSD, but with a 21.5" H-IPS display, keyboard and multi-touch mouse. It is built on the Intel Core i5-4250U dual-core, hyperthreading cpu and HD5000 integrated graphics. While the cpu is nominally rated at 1.4 gHz, turbo boost can take it up to 2.7 gHz (and also lower than 1.4 gHz). As a test, I did some brush work in Aperture on my MacBook Air (4350U 1.4/2.9) and the cpu topped out at 2.86 gHz according to Intel's Turbo Boost Gadget application (attached pic). So, while at first glance this may not seem all that great of a computer, it's capable of processing Canon 5Dii and Fuji X-E1 files in real time.
Plus, it includes all the standard features that all other Macs ship with.
Would I buy it? No; not because of its processing power, but because it's an iMac and it cannot be upgraded easily. The Mac Mini is a better computer, IMO.
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