iMac review: Modest gains for the new entry-level Haswell iMac
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There’s no denying that the 21.5-inch iMac is a beautifully designed all-in-one computer. Its gleaming aluminum body, seamless ultra-thin edges, and bright, LED-backlit IPS screen make the iMac a drool-worthy desktop. This design isn’t new, however—in fact, the 2013 iMacs are externally identical to the late 2012 iMacs. The updates to this iteration of iMacs are all internal.
The $1299 entry-level iMac features a 1TB hard drive, 8GB of RAM, a 21.5-inch screen with a 1920 by 1080 resolution, and a 2.7GHz quad-core Intel Core i5 processor. Sound familiar? That’s because they’re the same as the 2012 entry-level iMac.
But where the 2012 iMacs used Intel’s Ivy Bridge Core i5 processors, the 2013 models incorporate Intel’s fourth-generation Core processors, code-named Haswell. Haswell made its Mac debut with the MacBook Air released in June, and as our lab testing bears out, the Haswell processor is more efficient and higher-performing than its Ivy Bridge counterpart.
Haswell also brings a new integrated graphics option. All 2012 iMacs used discreet Nvidia GeForce GTX 600 series graphics. The 2013 iMacs were updated with Nvidia GTX 700 series graphics, except for the new low-end iMac in this review; it now uses Intel’s Iris Pro integrated graphics, which Intel claims should perform similarly to a discreet GPUs and be as much as twice as fast as the integrated graphics that shipped with Ivy Bridge. Integrated graphics share memory with the CPU, while discreet have their own designated RAM (from 500MB to 4GB in the new iMacs). Iris Pro still shares memory, but has access to a small amount (128MB) of dedicated on-chip memory. The 2013 MacBook Air uses Haswell processors and integrated graphics, but in these systems, Apple opted to use the Intel HD Graphics 5000.
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