Apple has updated its iMac line with up to three times more powerful graphics, faster processors, Thunderbolt 3, storage options and brighter Retina displays, and added a Retina Ultra HD display and discrete graphics to the US$1,299 21.5-inch iMac. The iMac supports 3D graphics, video editing and gaming, and with macOS High Sierra coming this fall, iMac becomes a platform for virtual reality content creation. The updated iMac features Kaby Lake processors up to 4.2GHz with Turbo Boost up to 4.5GHz and supports up to twice the memory as the previous generation. Fusion Drive is now standard on all 27-inch configurations and the top-end 21.5-inch iMac. SSD storage options are now up to 50% faster. The iMac also comes with Thunderbolt 3 port. Graphics on iMac are more powerful across the line with the new Radeon Pro 500-series graphics with up to 8GB of vRAM. The 21.5-inch model delivers up to three times faster performance and the 27-inch model is up to 50% faster, according to Apple. iMac also comes with a new display that is 43% brighter at 500nits and with support for one billion colors.

Apple has updated the entire iMac family, bringing a new Retina Ultra HD display to the 21.5-inch iMac for the first time and the Retina 5K display to every 27-inch iMac. The updated iMacs also feature more powerful processors and graphics, two Thunderbolt 2 ports and new storage options. Apple also introduced a new lineup of wireless accessories including the Magic Keyboard, Magic Mouse 2 and Magic Trackpad 2. The Magic devices feature rechargeable batteries that eliminate the need for disposable batteries. The new Magic Trackpad also brings Apple's Force Touch interface to the desktop. The 21.5-inch iMac is available with the all-new Retina Ultra HD display featuring a 4,096 by 2,304 resolution and 9.4 million pixels, 4.5 times more than the standard 21.5-inch iMac display. Every 27-inch iMac features a Retina 5K display, currently the highest resolution all-in-one display with a 14.7 million pixels, 7 times more pixels than an HD display.

Apple has unveiled the 27-inch iMac with Retina 5K display, featuring high resolution display with 14.7 million pixels. With a resolution of 5120 by 2880, the iMac with Retina 5K display has four times more pixels than the standard 27-inch iMac and 67% more pixels than an Ultra HD display. In apps like Final Cut Pro X, users can view Ultra HD video at full size while still leaving plenty of room for their assets and editing tools. The iMac with Retina 5K display uses an oxide TFT-based panel. A single Apple-designed timing controller (TCON), with four times the bandwidth, drives all 14.7 million pixels. The iMac with Retina 5K display also uses highly efficient LEDs and organic passivation to improve image quality and reduce display power consumption by 30%, Apple said.