Apple appears to have quietly introduced an updated version of its low-end 21.5-inch iMac for educational institutions, taking advantage of a cheaper dual-core Intel Core i3 processor and integrated graphics to offer pricing of $1099, $200 cheaper than the entry-level pricing for consumer models. The education-only iMac, which carries a model number of ME699LL/A, also includes just 4GB of RAM and a 500 GB hard drive, while the low-end consumer model doubles both of those figures.iMac 21.5-inch: 3.3GHz Dual-core Intel Core i3 (Education only model) Product Number : ME699LL/A - 3.3GHz Dual-Core Intel Core i3 - 1920 x 1080 resolution - 4GB (two 2GB) memory - 500GB hard drive - Intel HD Graphics 4000