The new iMacs come in four standard configurations, all with updated processors and graphics, and all with 8GB of 1600MHz DDR3 SDRAM and 1TB hard drives. The 21.5-inch models ship with either a 2.7GHz quad-core Ivy Bridge Core i5 processor and Nvidia GeForce GT640M graphics with 512MB of dedicated memory for $1299, or a 2.9GHz version of the same Core i5 CPU and Nvidia GeForce GT650M graphics with 512MB of dedicated RAM for $1499. The low-end standard configuration 27-inch iMac now comes with the same 2.9GHz Ivy Bridge quad-core Intel Core i5 processor as the high-end 21.5-inch iMac, but with Nvidia GeForce GT660M graphics with 512MB RAM for $1799. The higher-end 27-inch model uses a faster 3.3GHz quad-core Intel Core i5 processor and has an Nvidia GeForce GTX 675MX with 1GB of dedicated memory for $1999.
The screen was significantly less reflective than that of its predecessor, the new iMac is 40% lighter than the old one also boasts Apple’s new Fusion Drive, which combines Flash and regular old hard drive storage. (If you want to use CDs or DVDs, however, you’ll need a USB optical drive, sold separately.)