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January 14th, 2018 09:00

Which Optiplex motherboard for VT-d support?

Optiplex 760 MT VT-d support

Link to 760 Tech Guidebook p. 31

vt-d service manualLink to 760 Svc Manual p. 151

 

As shown above, the Optiplex 760 tech guidebook & svc manual both show that VT-d is possible.

I have two Dell Optiplex 760 MT with the Intel E8400 CPU, which has VT-d virtualization technology.

https://ark.intel.com/products/33910/Intel-Core2-Duo-Processor-E8400-6M-Cache-3_00-GHz-1333-MHz-FSB

Both 760s have motherboard 0M858N and BIOS A16 but I don't get the option to enable VT-d.

The only option is to generally enable "virtualization", which only enables VT-x. (I know that this option doesn't enable VT-d because VMware and VirtualBox will not allow me to "passthrough" a PCI card because VT-d is not enabled).

My guess is the 0M858N mobo doesn't support VT-d since Dell docs say it is an option with 760 models.

So there must be other motherboards that shipped with the 760 MT that do support VT-d.

Questions:

1.  What are the P/Ns/model #s for the Optiplex 760 MT motherboards that do support VT-d?

2.  Do these motherboards support Core 2 Duo CPUs like my E8400 or only Core 2 Quads?

3.  If I'm wrong and the 0M858N does support VT-d, then why don't I have the option to enable it on either PC?

Thank for replies :Smile:

 What my BIOS shows:Screenshot of my BIOS settings

Oh, and in case you're wondering, yes, I do have NX/Execute Disable Bit turned ON.

 

What it's supposed to show (found on Google Images):
VT-d option in BIOS

23 Posts

January 14th, 2018 20:00

 

What about the 0G214D motherboard.  Does it support VT-d if used with the E8400 CPU?

23 Posts

January 15th, 2018 14:00

I have confirmation from another 760 MT owner that his Optiplex 760MT BIOS Settings (with the G214D motherboard & Intel E8400 CPU) does not include the "VT for Direct I/O" option.

1 Message

December 19th, 2019 07:00

Bonjour j'ai un Dell Optiplex 7010 et je ne trouve pas le VT-d, pourriez vous me dire comment le retrouver dans le bios parce que je souhaite le désactiver. Merci de me répondre.

9 Legend

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47K Posts

December 19th, 2019 08:00

VT-x is there

VT-D is not.

These older models that run 32 bit XP are not VMWARE ESX Servers.

 

VT-d DMA Remapping requires Processor and Chipset and BIOS support.

Optiplex models are not Dell precision Workstations.

 

VT-d requires Workstation and select Server products

https://software.intel.com/en-us/articles/intel-virtualization-technology-for-directed-io-vt-d-enhancing-intel-platforms-for-efficient-virtualization-of-io-devices/

 

All of the current software requires CORE I3 I5 I7 with

LAHF and SAHF with 64 bit os.

Intel® Virtualization Technology for Directed I/O (VT-d) is not offered as a feature only (VT-x) based on XP and virtual pc 2007.

http://answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_web/virtualization-technology-not-working-on-windows/6d790614-58de-4b8b-9ecd-249f2ab40ff8

Hyper-V requires Second Level Address Translation (SLAT)

https://docs.microsoft.com/en-us/virtualization/hyper-v-on-windows/reference/hyper-v-requirements

 

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