Thank you all for the comments/discussions regarding Internet Explorer 9 compatibility with Windows XP.
Internet Explorer 9 utilizes much of graphics and performance sub-layers that were introduced with Windows Vista and carried forward to Windows 7. Hence Windows XP does not support Internet Explorer 9. We’ll need a minimum of Windows Vista Service Pack 2
or Windows 7 RTM as the operating system to be able to use Internet Explorer 9.
As previously stated in this thread Internet Explorer 9 uses Direct2D for Hardware Acceleration:
“Internet Explorer 9 uses the DirectX family of Windows application programming interfaces (APIs) to enable several advances for web developers.
We have moved all graphics and text rendering from the CPU to the graphics card by using Direct2D and DirectWrite. Graphics hardware acceleration means that rich, graphically intensive sites can render faster on Windows while using less CPU power. Plus,
you can take advantage of these changes automatically while you author sites with the same standards you are used to.”