Quoting from the SWsoft official announcement:
SWsoft, the leading provider of operating system virtualization and automation tools, today announced its Virtuozzo support of Intel® Virtualization Technology (VT) capabilities, including the recently unveiled Intel Virtualization Technology for Directed I/O (VT-d) specification.
By supporting Intel VT and Intel VT-d, Virtuozzo will offer customers additional levels of manageability, security, isolation and I/O performance.
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The SWsoft Virtuozzo product release with VT support is scheduled for later this year. Virtuozzo VT-d support will follow in conjunction with platform availability…
If you are interested in Virtuozzo you could read virtualization.info review of Virtuozzo for Windows 3.5.1