Windows 7 Barely Faster Than Vista
One of Microsoft's goals with Windows 7 was to improve performance versus Vista and XP. PCWorld ran their own test running Vista and Windows 7 on three machines (two desktops and a laptop), and found that 7 was less than 5% faster than Vista (5% is considered the threshold where a normal user will notice the difference). Running WorldBench 6, which uses common applications such as Microsoft Office, Firefox, and Photoshop, to test the systems, the largest difference was just 4 points on an HP Pavillion a6710t desktop. One noticeable exception was Nero 7 Ultra Edition, which had a 12% increase in performance. The team did not test startup times to see which system was faster there.