Here is an OEM license discussion for VirtualBox: http://forums.macresource.com/read.php?1,563553
... and for VmWare: http://mazimi.wordpress.com/2007/07/11/getting-around-windows-activation-when-virtualizing/
Hyper-V is a product for server products, surely not for the Hi-End 3D grafics.
For VirtualBox - have a look at http://translate.google.com.ua/translate?hl=en&sl=ru&tl=en&u=http%3A%2F%2Fhabrahabr.ru%2Fblogs%2Flinux%2F63534%2F
VmWare Fusion seem to be accelerating 3D graphics but this is a...
I was working with LeftHand and StarWind. Both are high-functional enterprise class products with perfect performance.
If you'd like to try `em, here you go:
http://www.starwindsoftware.com/
http://h10010.www1.hp.com/wwpc/us/en/sm/WF05a/12169-304616-3930449-3930449-3930449-3936136.html