Apple MD063LL/A 27" 4GB 1TB Intel Core i7-2600 X4 3.4GHz MacOSX, Silver

Apple iMac Intel AluminumThe iMac "Core i7" 3.4 27-Inch Aluminum (Mid-2011) originally was offered as a "configure-to-order" configuration of the iMac "Core i5" 3.1 27-Inch Aluminum (Mid-2011), but it later was offered a standard configuration, as well. Other than the processor (and the corresponding level 3 cache), these two models are identical. The iMac "Core i7" 3.4 27-Inch Aluminum (Mid-2011) is powered by a Quad-Core 3.4 GHz Intel "Core i7" I7-2600 (Sandy Bridge) processor with a dedicated 256k level 2 cache for each core and an 8 MB shared level 3 cache. In lieu of a system bus, it has a "Direct Media Interface" (DMI) that "connects between the processor and chipset" at 5 GT/s.