Hi There,
(I think) the board you have mentioned does have Intel VT-d. I can also confirm that the ASROCK Pro 4 Motherboard supports Intel VT-d. This has the Z77 Chipset and is the board I am using. I am not sure if passing through on-board devices is a good idea within ESXi, from what I have read, but I may be wrong.
I have also been told by Gigabyte that all their UEFI Motherboards support VT-d.
I've also built a home project ESXi server with an i5 2500 along with the ASROCK board and 24GB RAM. If you need any advice on anything please feel free to PM me, I've learnt a lot since starting it last year and will be more than happy to assist.
Karl