H87M-PRO User's Manual
Page 86
... the system memory size allocated to enable virtualization technology function on memory control hub. [Enabled] Enables the function. [Disabled] Disables this function. 3.6.4 System Agent Configuration VT-d [Disabled] Allows you to DVMT 5.0 used by the iGPU.
... the system memory size allocated to enable virtualization technology function on memory control hub. [Enabled] Enables the function. [Disabled] Disables this function. 3.6.4 System Agent Configuration VT-d [Disabled] Allows you to DVMT 5.0 used by the iGPU.