Updated: Core i5 iMacs are fast, but early Core i7 benchmarks show 30 percent performance gains. A good upgrade for $200 (which adds 10 percent to the $2000 price). Timon-Royer's graph uses Geekbench 2 results (OS 10.6.2). [Timon-Royer]»11/16/09 7:09am11/16/09 7:09am
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