Frank Anderson from Citrix made a side-by-side video sequence of single session tests of Office 2010 and Office 2013 to show application qualitative performance differences from a user experience perspective in conjunction with CPU resource consumption. A full single Login VSI test run of 14 minutes into a short 5½-minute movie.
While there are a few instances when the Office 2013 workload leads in CPU efficiency, overall the Office 2010 test outpaces the Office 2013 applications.
The difference doesn’t seem that significant at first, the impact is more far-reaching when you consider performance beyond the recording resource consumption of this single session. When sites try to scale VDI or SBC workloads based on Office 2013, they will need to take the greater CPU demand and lower user densities into account.
Supporting Blog: http://blogs.citrix.com/2013/03/27/microsoft-office-2013-impact-on-vdi-and-sbc-workloads/