Apple iMac MD095LL/A 27-Inch Desktop (OLD VERSION) (Discontinued by Manufacturer) 2.9 GHz quad-core Intel Core i5 processor (Turbo Boost up to 3.6GHz) with 6MB L3 cache 1 TB (7200-rpm) hard drive, 8 GB (two 4GB) of 1600MHz DDR3 memory 27-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1440 resolution NVIDIA GeForce GTX 660M graphics processor with 512MB of GDDR5 memory Mac OS X Mountain Lion