Ubuntu 12.04 vs. Windows 7: Intel Loses On Linux
 

All you alternative OS types out there aren't going to be happy with this article. Here's a comparison of the Ubuntu 12.04 LTS versus Microsoft Windows 7 performance when it comes to using Intel Sandy Bridge and Ivy Bridge processors with integrated graphics. While the Sandy Bridge graphics performance was once faster when it came to OpenGL with the open-source Linux driver, that's no longer the case. The Linux OpenGL performance for both Sandy Bridge and Ivy Bridge hardware is now slower in most GL workloads than Intel's Windows 7 x64 driver.

http://www.hardocp.com/news/2012/05/...oses_on_linux/