LucidLogix's Virtu MVP 2.0 is a software package that takes advantage of both the embedded GPU and discrete graphics card and provides the user with on-demand switching akin to Nvidia's Optimus system and has access to additional features such as Virtual VSync and Hyperperformance.
The Virtu MVP 2.0 is compatible with a fairly wide range of hardware and will run "optimally" on a Sandy Bridge i5 on a Sandy / Ivy Bridge motherboard with a Geforce 460 GTX and 2 GB of memory. Though past versions of the software package were only available through motherboard manufacturers and were infrequently updated, this version is on sale directly to consumers and should be updated far more regularly.
The Virtu MVP 2.0 is compabitble with 32-bit and 64-bit versions of Windows 7 and 8 and is currently available in three models: Basic with GPU virtualization for $34.99, Standard with Virtual Vsync for $44.99 and Pro with Hyperformance and Virtual Vsync for $54.99. Further information is available on LucidLogix's website.