Vista and XP go head-to-head with Windows 7
ZDNet have published a detailed performance comparison focussing on Windows XP, Vista and 7, what is particularly interesting is that they chose three types of hardware – low/high end and mobile.
In conclusion:
“In Windows 7, Microsoft has succeeded in providing an OS that’s likely to meet the performance requirements of consumers and business users alike. The early signs are that Windows 7 will enjoy a much better take-up than Vista. Of our three test platforms, only the low-end Intel Atom-based system is not really suitable for Windows 7. But even a single-core processor such as a 1.4GHz Core 2 Solo is sufficient to deliver smooth performance under Windows 7. High-end systems with quad-core processors also benefit from Windows 7, because many of the operating system functions exploit the computing power of multi-core chips.”
Source: here
