We loaded the Windows 7 R C on three systems and then ran our WorldBench 6 suite. Afterward we compared the results with the WorldBench 6 numbers from the same 3 systems running Windows Vista. Each Personnel Computers was slightly faster when running Windows 7, but in no case was the overall improvement greater than five percent, our threshold for when a performance change is noticeable to the average user.
The largest difference was 4 points--102 for Vista versus 106 for Windows 7 on an HP Pavillion a6710t desktop. Our other two test machines showed similarly minor performance improvements: A Maingear M4Aa79T Deluxe desktop improved by 1 point (from 138 on Vista to 139 on Windows 7), and a Dell Studio XPS 16 laptop improved by 2 points, from 97 on Vista to 99 on Windows 7.
WorldBench 6 consists of a number of tests involving ten common applications, including Microsoft Office, Firefox, and Photoshop. On the individual tests, the benchmark results were generally within a few percentage points of each other. One notable exception, however, was Nero 7 Ultra Edition, where Windows 7 made significant improvements, ranging from a 12 percent speedup to a 26 percent speedup, depending on the PC we used in our tests. Although we have yet to confirm it, PC World Test Center Director Jeff Kuta notes that this difference may be due to updated hard-disk drivers in Windows 7. Any improvements to Windows 7's disk support will be more noticeable in an application like Nero, which uses the hard drive heavily. The test involving WinZip, another hard-drive-dependent task, also showed marked improvement under Windows 7.
We also measured a noteworthy 7 percent speed increase in our Autodesk 3ds max 8.0 SP3 (DirectX) test on the HP Pavillion desktop, which had an nVidia GeForce 9300GE graphics board. nVidia's drivers appear to be better optimized for Windows 7 than Windows Vista.
In contrast, however, each of the systems took slightly longer to perform the tests in Microsoft Office and Firefox when they were running the new operating system than when they were running Vista.
Of course, it's important to remember that we performed these tests with the release candidate of Windows 7. Though the operating system's features likely won't change in the final version, Microsoft’s engineers may still find ways to tweak the code to improve performance.
If these test results remain consistent with those for the final version of Windows 7, the news will likely be disappointing to many Windows users. One of the major complaints about Windows Vista was the fact that it was consistently slower than Windows XP. If Windows 7 doesn’t significantly improve that situation, it may fail to convince people to move away from Windows XP.
That said, there may be other areas we didn't cover in our testing--such as startup times--where Windows 7 may outperform Windows Vista by a wider margin. The best way for you to get a feel for Windows 7's performance is to download the release candidate and take it for a test drive on your system.
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