Windows Vista

Windows Vista is Microsoft's new version of windows after the windows xp, GUI-based operating system from Microsoft that is used in personal computers (PCs), both for pengguuna home, business, or laptop computers. Before they were announced with the name of Windows Vista on 22 July 2005, the operating system is better known by his codename Longhorn (derived from the name Longhorn saloon, a popular bar in Whistler, British Columbia, Canada). Microsoft released windows vista on 8 november 2006 for business users and 30 January 2007 for home users. Thus, the launch of this windows vista is more than five years since the launch of Windows XP on 25 October 2001.
A new face called windows vista aero, built on a new machine called the Desktop Windows Manager. Windows Aero, also known as the aero glass, add support for 3D graphics (known as flip 3D), window transparency, animation, and other visual effects. Windows Aero requires graphics cards and high-end hardware capacity as:  
  

1. 64 MB of graphics memory is recommended to set layers 1024 * 768, and 128 MB to 1600 * 1200 +.  
2. At least 32 bits per pixel 
3. 3D hardware that supports accellaration direct 9.0  
4. Memory with bandwidth (bandwidth) is recommended 2 GB / s  
5. Ability to draw ~ 1.5 million triangles / second, with Setu window until ~ 150 triangles  
6. Supports Windows Driver Display Driver Model (WDDM).

Vista also offers other aero models:  

1. Standard Mode, is a variant of Windows Aero transparency, animation, and other graphical effects like Flip 3D.
2. Windows Classic mode, also available as the most basic interface. Windows classic has a similar view with Windows 2000 and do not use the Desktop Composition Engine new. Windows Classic Windows XP requires drivers Display Driver Model (XPDM) or WDDM and graphics card that supports Windows 2000.

Source : http://id.wikipedia.org/wiki/Windows_Vista