Intel Iris Pro 5200: Windows 8 vs. Ubuntu Linux Redux
Phoronix: Intel Iris Pro 5200: Windows 8 vs. Ubuntu Linux Redux
Earlier this month I published benchmarks of Intel's Iris Pro 5200 graphics when comparing the Intel driver performance between Windows 8 and Ubuntu Linux. The test results found that there were some performance wins for Intel OpenGL on Linux after the very latest open-source driver optimizations were made, but there are still some losses. In this article are a few more Windows 8 vs. Linux benchmark results for the Haswell Ultrabook with Iris Pro graphics.
The most favorable results show linux 75% faster, and the least favorable show windows 25% faster. I don't think you can ever have perfect parity, but clearly, Intel Open Source drivers are first class citizens ...