Apple devotees have known it from the start that ÂApple is just plain impressive. The iMac has been synonymous with sleek since it first arrived on the scene, and the models get more amazing each year. The fast, responsive iMac all-in-one desktop is thin and stylish. All its models are high quality, and you can recognize them by the edge-to-edge display glass and telltale single piece aluminum stand. The 2012 iMac with its LED backlit LCD display is so incredibly light that even devoted Apple fans will be amazed. It measures only a mere 5mm at its thinnest point. Yet it still packs a powerful punch. It offers lightning fast USB 3.0 ports along with optional built-in Fusion Drive for more efficient and faster storage. The 2012 iMac comes in two sizes: the iMac 21.5 and the iMac 27. The iMac 21.5 comes with up to 16 MB of memory, and the iMac 27 has a jaw dropping 32 MB of memory. The iMac 24 Connectivity was discontinued in 2012 but is a top-notch machine. It includes three USB 2.0 ports, a Firewire 400 port and a Firewire 800 port, built-in AirPort Extreme, and Gigabit Ethernet, as well as mini-DVI, which support an external display in extended desktop mode. The seamless front surface on the beautiful Aluminum iMac systems combines with the ultra-thin aluminum Apple Keyboard. The G5 may have been discontinued in 2006, but used desktops are still on the market for diehard fans. You can also find parts for sale.