The 21.5″ iMac has the same 1920 x 1080 pixel resolution as high-def television, and the display is LED backlit. With all these changes, the iMac looks like it has ever since Apple moved to 21.5″ and 27″ screens in October 2009.ĬPU speeds start at 2.5 GHz, and there’s a 2.8 GHz i7 option for the 2.7 GHz model, which adds $200 to its price.Īpple has improved AirPort performance by building three WiFi antennas into the new iMac, allowing three channels with 150 Mbps bandwidth for a maximum bandwidth of 450 Mbps.
The 2011 iMac EFI Update, released 2011.05.05, enables 6 GBps SATA for even faster drive performance. With the 2.7 GHz and faster models, you can choose to replace the hard drive with a 256 GB SSD or have both a hard drive and an SSD installed, an Apple first. The Mid 2011 iMac shipped with OS X 10.6.7 and will support OS X 10.9 Mavericks when it ships.Īpple now offers a solid-state drive (SSD) option on all iMacs except for the 2.5 GHz 21.5″ model, an improvement over the 2010 iMac, where only the top-end model had SSD as a build-to-order option. All other models ship with a 1 TB hard drive and even more powerful Radeon graphics. The entry-level iMac has 4 GB of RAM, a 500 GB hard drive, and Apple’s aluminum keyboard and Magic Mouse. For 2011, the entire iMac line goes quad-core with Core i5 CPUs (and even faster i7 build-to-order options), moves to Intel’s Sandy Bridge chipset, gets Turbo Boost 2.0 technology, adopts the next generation of AMD Radeon HD graphics processors, and gains the Thunderbolt technology introduced with the Early 2011 MacBook Pro models.