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Help with VT-d

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Joined
Nov 6, 2011
Messages
19
Motherboard
Intel NUC 6i5SYH
CPU
i5-6260U
Graphics
Integrated
Mac
  1. MacBook Pro
Classic Mac
  1. eMac
Mobile Phone
  1. iOS
Hi All,

I almost gave up on my hackintosh build (UEFI Gigabyte GA-Q77M-D2H + i7-3770) recently because I didn't realize I needed to disable VT-d in the BIOS. Luckily now that I have everything seems to be working fine.

I read through a couple other threads on VT-d:
http://www.tonymacx86.com/mountain-...10-8-2-disabled-vt-d-bad-gfx-performance.html
http://www.tonymacx86.com/mountain-lion-desktop-support/75495-vt-d-motherboard-problem.html

I would still like to know more about this setting and how it affects performance and functionality as well as why this is an issue on this motherboard when others I have worked with did not have this limitation.

What kind of MacOS features/programs are affected by disabling VT-d? I know virtualization apps like Parallels and Fusion may be affected but what about games and other apps?

What is the best way to restore VT-d functionality? I started with 10.8.2 so I don't 10.8.1 settings to revert back to.

Thanks!
 
Joined
Nov 6, 2011
Messages
19
Motherboard
Intel NUC 6i5SYH
CPU
i5-6260U
Graphics
Integrated
Mac
  1. MacBook Pro
Classic Mac
  1. eMac
Mobile Phone
  1. iOS
After doing some more research I'm a little less concerned about the lack of VT-d support. Many 2011 Apple Macs didn't support VT-d and Intel's i7 K series processors don't support VT-d which may explain why my last build with i7-2600K has no issues like this. Seems like this is still not a commonly used feature outside of OS virtualization.
 
Joined
May 4, 2011
Messages
31
Motherboard
Gigabyte Sniper M3
CPU
Intel Xeon E3-1245 V2
Graphics
EVGA GTX 680
Mac
  1. MacBook Air
Classic Mac
  1. Power Mac
Mobile Phone
To get vt-d working you have to install a AppleACPIPlatform Rollback to version 10.8.1. Supported by default in Multibeast 5.3.0.
 

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