https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 12 May 2026 11:42:32 +0000 Sat, 31 Oct 2015 22:33:05 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=1131 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5207&title=h81-pro-btc-vtd-support#5207 Author: ADeityToBehold
Subject: 1131
Posted: 31 Oct 2015 at 10:33pm

parsec wrote: Yes the VT-d support is confusing, since Intel's own information is contradictory about this. I wonder if VT-d support by the chipset is similar to which Intel chipsets support over clocking? Only the 'Z' Intel chipsets officially support over clocking, but we now know how true that is given the non-Z OC feature and debacle that happened this year. Finding VT-d support on boards that supposedly cannot support it seems to tell us that VT-d support is more dependent upon BIOS/UEFI support for VT-d, than the chipset itself. If we check the manual of the H81 Pro BTC, we can see in the Chipset Configuration screen, there is an option to Enable or Disable VT-d: Sorry about the H81 chipset warning, I should have looked at the board's manual, since that will tell us if VT-d is supported or not. I still think the CPU must support VT-d even if the board does, for it to be available. Note that Intel has VT-x support listed separately, so don't confuse the two. I mainly wanted to warn about the H81 chipset apparently not supporting VT-d, since it is the chipset with the least amount of features in the 8 series, and with the most limitations on the extent of the features (only one DIMM per channel, four SATA ports total, only two SATA III, no RAID/IRST support, only two USB 3.0 ports, supports two monitors rather than three), and it is the cheapest of all the 8 series chipsets.

Alright, I'll give the H81 a go in a few weeks when it  arrives along with the rest of my components and get back to this thread about how VMWare reacts to it... I can live without it but the emulated NICs (if there is no passthrough) may hurt performance if I ever upgrade to FTTP. Thanks for your quick responses btw :)


Edited by ADeityToBehold - 31 Oct 2015 at 10:33pm]]> Sat, 31 Oct 2015 22:33:05 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5207&title=h81-pro-btc-vtd-support#5207 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5188&title=h81-pro-btc-vtd-support#5188 Author: parsec
Subject: 1131
Posted: 31 Oct 2015 at 1:00pm

Yes the VT-d support is confusing, since Intel's own information is contradictory about this.

I wonder if VT-d support by the chipset is similar to which Intel chipsets support over clocking?

Only the 'Z' Intel chipsets officially support over clocking, but we now know how true that is given the non-Z OC feature and debacle that happened this year.

Finding VT-d support on boards that supposedly cannot support it seems to tell us that VT-d support is more dependent upon BIOS/UEFI support for VT-d, than the chipset itself.

If we check the manual of the H81 Pro BTC, we can see in the Chipset Configuration screen, there is an option to Enable or Disable VT-d:



Sorry about the H81 chipset warning, I should have looked at the board's manual, since that will tell us if VT-d is supported or not. I still think the CPU must support VT-d even if the board does, for it to be available. Note that Intel has VT-x support listed separately, so don't confuse the two.

I mainly wanted to warn about the H81 chipset apparently not supporting VT-d, since it is the chipset with the least amount of features in the 8 series, and with the most limitations on the extent of the features (only one DIMM per channel, four SATA ports total, only two SATA III, no RAID/IRST support, only two USB 3.0 ports, supports two monitors rather than three), and it is the cheapest of all the 8 series chipsets.
]]> Sat, 31 Oct 2015 13:00:39 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5188&title=h81-pro-btc-vtd-support#5188 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5178&title=h81-pro-btc-vtd-support#5178 Author: ASRock Expert
Subject: 1131
Posted: 31 Oct 2015 at 4:03am

I hope ASRock TSD will answer to You.
]]> Sat, 31 Oct 2015 04:03:36 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5178&title=h81-pro-btc-vtd-support#5178 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5177&title=h81-pro-btc-vtd-support#5177 Author: ADeityToBehold
Subject: 1131
Posted: 31 Oct 2015 at 3:48am

ASRock Expert wrote: Check this out: http://lists.xen.org/archives/html/xen-users/2013-06/msg00083.html http://lists.xenproject.org/archives/html/xen-users/2013-07/msg00234.html

This is most confusing.. the chipsets do not support VT-d yet VT-d works on some? I'd rather not take the chance if it's such a flaky issue so I'll probably stick with the Q87M vPro unless there is some more concrete data
]]> Sat, 31 Oct 2015 03:48:26 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5177&title=h81-pro-btc-vtd-support#5177 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5174&title=h81-pro-btc-vtd-support#5174 Author: ASRock Expert
Subject: 1131
Posted: 31 Oct 2015 at 2:54am

Check this out:
http://lists.xen.org/archives/html/xen-users/2013-06/msg00083.html
http://lists.xenproject.org/archives/html/xen-users/2013-07/msg00234.html
]]> Sat, 31 Oct 2015 02:54:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5174&title=h81-pro-btc-vtd-support#5174 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5170&title=h81-pro-btc-vtd-support#5170 Author: ADeityToBehold
Subject: 1131
Posted: 31 Oct 2015 at 2:27am

I might've found the solution, albeit a little more expensive: Q87M vPro. According to Intel, the Q87 chipset supports VT-d and the manual for the board suggests that it can be enabled. Do you guys think it viable?
]]> Sat, 31 Oct 2015 02:27:45 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5170&title=h81-pro-btc-vtd-support#5170 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5169&title=h81-pro-btc-vtd-support#5169 Author: ADeityToBehold
Subject: 1131
Posted: 31 Oct 2015 at 2:07am

Back to the drawing board I suppose.. I shall continue on my trek]]> Sat, 31 Oct 2015 02:07:07 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5169&title=h81-pro-btc-vtd-support#5169 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5166&title=h81-pro-btc-vtd-support#5166 Author: parsec
Subject: 1131
Posted: 31 Oct 2015 at 1:38am

ADeityToBehold wrote: Excellent. I've been searching for a PCI-E ridden, VT-d compatible board for a while ;)

Wait a minute! According to Intel, the H81 chipset does not support VT-d. Check the H81 specs here (scroll down to the Advanced Technologies section):

http://ark.intel.com/products/75016/Intel-DH82H81-PCH

The H81 chipset does not support any virtualization technologies according to the specs. Both the CPU and chipset must support VT-d in order for it to be available. We cannot assume VT-d will work unless both components support it.




]]> Sat, 31 Oct 2015 01:38:15 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5166&title=h81-pro-btc-vtd-support#5166 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5160&title=h81-pro-btc-vtd-support#5160 Author: ADeityToBehold
Subject: 1131
Posted: 30 Oct 2015 at 10:51pm

Excellent. I've been searching for a PCI-E ridden, VT-d compatible board for a while ;)
]]> Fri, 30 Oct 2015 22:51:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5160&title=h81-pro-btc-vtd-support#5160 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5159&title=h81-pro-btc-vtd-support#5159 Author: ASRock Expert
Subject: 1131
Posted: 30 Oct 2015 at 10:48pm

The MBO supports it if the CPU supports it.]]> Fri, 30 Oct 2015 22:48:03 +0000 https://forum.asrock.com/forum_posts.asp?TID=1131&PID=5159&title=h81-pro-btc-vtd-support#5159