Does Intel DX79SI and Intel DX79TO board support VT-D

As we know that now a days the virtual machines are taking advantage of the VT-D technology and if we compare the VT-D technology with the VT-X then the gains are more with VT-D technology but then the gain is mostly with the graphics processing units and sound cards in a number of cases, so here I just wanted to ask that, Does Intel DX79SI and Intel DX79TO board support VT-D, I have been checking out for the same but then I have got varying answers so Is there anyone who is quite sure about what I am asking and can clear my doubt?? Any help regarding this will be highly appreciated.

In that case I will like to inform you that VT-d is processor and it is depends on the operating system, as far as I am aware the current 2011 socket processors (i7-3930K, i7-3960X) does not support VT-d but then they just support VT-x, I don’t think that we will be able to see VT-d support if intel continues to follows their normal offerings under the Extreme series but then there are chances that they can come up with a locked 39xx for the socket 2011 which will supports VT-d. I don’t think that they will be coming up with the same soon as well but then we can just expect, time will tell if it will or will not.

I have checked out for the current 2011 socket processors and I have found them to be supporting the below technologies:

• Intel Virtualization Technology (Intel VT)
• Intel Virtualization Technology for Directed I/O (Intel VT-d)
• Intel Virtualization Technology Intel Core i7 processor family for the LGA-2011Socket Extensions
• Intel 64 Architecture
• Intel Streaming SIMD Extensions 4.1 (Intel SSE4.1)
• Intel Streaming SIMD Extensions 4.2 (Intel SSE4.2)
• Intel Advanced Vector Extensions (Intel AVX)
• Intel Hyper-Threading Technology
• Execute Disable Bit
• Intel Turbo Boost Technology
• Enhanced Intel SpeedStep Technology

I also wanted share that the previous processors were having errata affecting VT-d which might have been fixed with the newer processors and/or stepping, as far as the socket 1155 processors are concerned Intel is having Q67 boards with VT-d support but then I don’t think that they are having support for it on x79 boards, so here I just wanted to know that if this is the case or does these boards actually support VT-d or not.

I don’t think that Intel DX79SI and Intel DX79TO board supports VT-D as they are not mentioned in the below list, I just wanted to share that the below list is of VT-d Enabled Systems:
VT-d enabled chipsets:

• Intel Q35 (desktop / workstation)
• Intel Q45 (desktop / workstation)
• Intel X58 (desktop / workstation)
• Intel 55x0 (server)
• Intel 3450 (workstation / server)

Chipsets having VT-d capability:

• Intel X38 (desktop / workstation)
• Intel X48 (desktop / workstation)
• Intel 32x0 (server)
• Intel Desktop Boards having VT-d support enabled:
• Intel DQ35JO
• Intel DQ35MP
• Intel DX38BT
• Intel DX48BT2
• Intel DQ45CB (BIOS 0061 required, previous versions are known to cause problems)
• Intel DQ45EK
• Intel DX58SO

ASUS Desktop Boards having VT-d support enabled:

• ASUS P5E-VM DO (Intel Q35 chipset)
• ASUS P6T Deluxe (Intel X58 chipset
• ASUS P6T6 WS Revolution (Intel X58 chipset)
• ASUS Z8NA-D6 (dual processor nehalem board)

Motherboards based on 32x0 having working VT-d:

• Intel server board: S3210SHLX (BIOS >R0044 required.)
• Supermicro server mainboard: X8DT3-F

OEM systems having VT-d enabled:

• Dell: Optiplex 755, Optiplex 980
• HP Compaq: DC7800
• Fujitsu-Siemens: Esprimo 5925
• Lenovo: ThinkStation E20 and Thinkserver TS200v

These are the Intelt Desktop Boards that support Intel VT and the Intel DX79SI and Intel DX79TO board are mentioned in the below list so I don’t think that they might be supporting VT-D:
Chipset: Desktop Board

• X79- DX79SI, DX79SR, DX79TO
• Z77- DZ77BH-55K, DZ77GA-70K, DZ77RE-75K
• H77- DH77KC, DH77EB, DH77DF
• B75- DB75EN
• Z68- DZ68ZV; DZ68DB; DZ68BC
• P67, H67- DP67DE; DP67BG; DP67BA; DH67VR; DH67GD; DH67CL; DH67CF; DH67BL
• B65- DB65AL
• H61- DH61AG; DH61BE; DH61CR; DH61DL; DH61SA; DH61WW
• X58- DX58SO2; DX58SO; DX58OG
• Q57- DQ57TM; DQ57TML
• H55, P55- DH55HC; DH55PJ; DH55TC; DP55KG; DP55SB; DP55WB; DP55WG
• X48- DX48BT2
• G45, P45, Q45- DG45FC; DG45ID; DP45SG; DQ45CB; DQ45EK
• B43, G43, P43, Q43- DB43LD; DG43GT; DG43NB; DP43TF; DQ43AP
• G41- DG41BI; DG41CN; DG41KR; DG41MJ; DG41RQ; DG41TY
• X38- DX38BT
• P35, Q35- DP35DP; DQ35JO; DQ35MP
• G33- DG33BU; DG33FB
• G31- DG31PR

These are the Intel Desktop Boards support Intel VT with Directed I/O
Chipset: Desktop Board

• Z77- DZ77BH-55K, DZ77GA-70K, DX77RE-75K
• H77- DH77KC, DH77EB, DH77DF
• B75- DB75EN
• Q67- DQ67EP; DQ67OW; DQ67SW
• Q57- DQ57TM; DQ57TML
• Q45- DQ45CB; DQ45EK
• Q35- DQ35JO; DQ35MP