The 27" iMac has been fitted with Intel's Core 2 Duo processor - a powerful processor that boosts application performance. Combined with the system memory, it delivers robust performance in everything you do. Also improved are the graphics capabilities. Inside, you'll now find powerful ATI Radeon 4670 graphics which lets you play the latest 3D games and HD video with ease. You'll be able to work in the most demanding visual applications - even editing video is a breeze. One of the first things you'll notice is the screen; it's brighter and sharper. That's because it's now backlit with LED lights, which are brighter, more efficient and offer perfectly uniform lighting across the screen. It also has a higher resolution - 2560 by 1440 to be exact. And the 1000:1 contrast ratio ensures blacker blacks and brighter whites. The end result is a truly stunning view of whatever you’re viewing. The chassis has also been redesigned. The glass screen now goes edge-to-edge, effectively perfecting the iMac's simple, seamless appearance. The tapered pedestal is much slimmer and sleeker, yet offers the same amount of structural strength. And the redesigned speakers produce louder, clearer sound with great bass response and minimal distortion. The new design ensures cooler, quieter operation. An intelligent control system monitors the internal temperature and delivers the appropriate amount of airflow to all the critical components. Plus, the three internal fans are ultra-quiet. So even when you're working in the most resource-demanding applications, the iMac is quieter than a mouse. Speaking of mice, the iMac comes with Apple's all-new Magic Mouse. It's designed to do everything the old mouse does, only with no wheel, no ball, and no visible buttons. It uses Multi-Touch technology and contains a smart chip that can tell the difference between a resetting hand, a scrolling finger, and a two-finger swipe. It's the smartest, most intuitive mouse ever made. The new 27" iMac ships with the OS X Snow Leopard operating system, a built-in iSight camera, an SD card slot, and so much more. Please Note: This product only contains French operating instructions and system software. In this context GB or Gigabytes refers to 1 Billion Bytes. The actual formatted capacity will be less.