Anilrgowda

Refuting rumors that the vaunted Aero user interface in Windows Vista would slow down computers, Microsoft this past week pointed to a study that comes to a different conclusion. According to a Principled Technologies study that was sponsored by Microsoft, the Aero user interface has "little or no negative effect on Windows Vista's performance." In fact, in some instances, Aero actually provided a performance boost.
"We put quite a bit of effort into making sure that the new visuals were as [efficient] as possible and it really paid off," Matt Ayers, a program manager in Microsoft's Windows Client Performance team wrote in the newly-christened Windows Performance Blog. The key findings of this study, which measured performance on a wide range of machine types, is that Windows Vista is more responsive than XP after rebooting, and roughly as responsive as XP in general. Aero, meanwhile, has little effect on the responsiveness of Vista.
What I find interesting about this study is that most of the PCs tested were not particularly high-end systems. Principled Technologies reports that it tested one notebook systems, three desktop PCs, and one Tablet PC. Only one of those systems had a dual core processor. It also tested a wide range of system operations, including such things as opening and using various Microsoft Office and third party applications. You can download a PDF version of the study from the Principled Technologies Web site.