Apple quietly refreshed its iMac hardware lineup. The 20-inch and 24-inch iMac models have now been replaced by 21.5-inch and 27-inch iMac models carrying LED-backlit displays. Apart from new LED display, the new iMacs come with Wireless Keyboard and the all new Magic Mouse. The top end 27-inch iMac offers choice between quad-core Intel Core i5 and Core i7 processors while 21.5-inch iMac comes with Intel Core 2 Duo processors.

Four new iMac models feature glossy LED-backlit display with 16:9 aspect ratio made from arsenic free glass and are mercury-free. As against the earlier 1680×1050 pixel resolution in 20-inch display, the new iMac progresses to support 1920×1080 pixel resolution. Supporting full HD (1080p) content, the new iMacs are ideal for watching HD movies, graphical designing or editing videos. Apple updated its iMac lineup seven months back in March.

These new displays are packed in all-aluminum enclosures and have 178 degree viewing angle. No Blu-ray in this iMac refresh as rumored but the iMacs feature SD card slot. Both 21.5-inch and 27-inch iMacs are available in two different models.