The iMac offers some prime pixel real estate. The 27-inch, 2560-by-1440 display has a whopping 78 percent more pixels than the 21.5-inch iMac. And a 1000:1 contrast ratio gives you more vibrant colours and blacker blacks. All that in a widescreen display with a 16:9 aspect ratio - the same as an HD TV. The iMac display looks great from any seat in the house, thanks to a premium display technology called in-plane switching (IPS). IPS gives you a bright picture with excellent colour consistency - even if you'...


