For the past few days at Phoronix we have begun looking extensively at the Intel Iris Pro 5200 graphics under Linux, since receiving the System76 Galago UltraPro. The Iris Pro 5200 are the new high-end Intel Haswell graphics that have 128MB of embedded video RAM on the die, which should yield a nice performance boost when properly implemented within the Intel Linux driver. Already our testing has found the Iris Pro performance on Linux has doubled with open-source driver improvements since Haswell`s launch. Now we`re out today with our first Intel Iris Pro OpenGL gaming benchmarks between Ubuntu Linux and Microsoft Windows 8 for this Intel Core i7 Ultrabook."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips