I took a chance on a E5-2660 engineering sample (B0 stepping) and it runs great on an Asus P9x79 WS mobo with 0802 BIOS. However, I don't see the Directed I/O aka VT-d as an option in the BIOS and ESXi is telling me it is not available. I know Chris did some testing with engineering samples and some other people have this version running. Has anyone been gotten VT-d on a 2600 B0 stepping with Asus? This piece of virtualization technology is the only thing keeping my ESXi setup from being awesome.