
Microsoft launched Internet Explorer 9 a week ago which runs on Windows 7 and Vista, but not on Windows XP. Microsoft has said the decision to not support Windows XP came out of its move to accelerate some browser chores, including composing the page, by tapping the graphics processor, or GPU.
Both IE9 and Firefox 4 (released yesterday) support hardware acceleration on Windows 7 and Vista by calling on those operating systems' Direct2D and Direct3D APIs for content rendering and compositing. Windows XP, however, does not support Direct2D, leaving Mozilla to partially accelerate Firefox 4 using Direct3D on the aged OS.
Johnathan Nightingale, the director of Firefox said, "That took us a lot of work. We had to do almost twice the work to accelerate [Firefox 4] on Vista and Windows 7, and Windows XP, but by our count, Windows XP still accounts for 40% to 50% of the Web. Our obligation is to the users, and Windows XP is not a part we can cut out."
Statistics from Web analytics firm Net Applications show that Windows XP accounted for 55% of all operating systems used to connect to the Internet last month, making it the most popular OS by far. When only those systems running Windows were tallied, XP's share jumped to 61%.
By comparison, Vista and Windows 7 together accounted for 38% of all versions of Windows used to reach the Web last month.
Via Computerworld











