Windows 7's XP mode doesn't require a separate XP license. Running XP through Virtual PC requires users to own a separate XP license, Price said. Performance won't be as fast as XP Mode, which relies on a newer version of Virtual PC and runs XP at what "feels like native speed to me," Price said, though he warned users not to expect to play 3-D games well in XP Mode. Without hardware virtualization, users can still run Windows XP virtually using the free Virtual PC 2007 from Microsoft. Users can check if their computer supports hardware virtualization by downloading and running a free app, SecurAble. Similarly, AMD's Sempron and older Athlon 64 chips also lack AMD-V. Even some Pentium D and Core and Core 2 chips lack VT. ![]() Intel Celeron, Pentium Dual-Core, and Pentium M chips all lack VT. AMD's version is called AMD-V, formerly code-named Pacifica. ![]() Intel and AMD both began offering chips with onboard virtualization more than three years ago. ![]() Jeff Price, director of product management for Windows, admitted that the lack of hardware virtualization may also be a stumbling block for many recent notebook and desktop PCs. But these are meant for ultra-mobile PCs, and haven't been used on many netbooks yet. ![]() Several members of Intel's Atom Z5 series of CPUs (formerly known as Silverthorne) do support VT.
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