VirtualBox is flexible enough to handle many types of 32-bit and 64-bit configurations. If you need to run a 32-bit version of XP in a 64-bit host, you can do that without any problems.

If VirtualBox is not showing 64-bit Operating System, Enable Hardware Virtualization or Disable Hyper-V. More suggestions are here in this post.

Benchmark Score for Novabench using VirtualBox on 64-bit Windows 7 (above) However, where VirtualBox fails miserably is in virtualized 3D application performance on Windows.

Most importantly, 2.0 supports running 64-bit operating systems, like Windows Vista and certain Linux distributions, on a 64-bit computer.

Sun Microsystems this week rolled out version 2.0 of its xVM VirtualBox. The product is a cross-platform, open source hypervisor that supports hosts ranging from Mac OS X and Windows to Solaris ...

VMware has a press release on their website that announces the release and availability of version 3.0 of Fusion, which brings 64-bit support along with other enhancements to the software.

Sun xVM VirtualBox 2.0 is available now for Mac OS X (all versions, Intel hardware only), Windows (32- and 64-bit XP, Vista, and Server 2003 and 2008), Linux (several flavors), and Solaris (32- and 64 ...