Chapter 5: UEFI BIOS
59
GT - Power Management Control
RC6 (Render Standby)
Use this feature to enable render standby support. The options are Disabled and
En-
abled
.
Maximum GT frequency
Use this feature to define the Maximum GT frequency. Choose between 33MHz (RPN)
and 1200Mhz (RP0). Any value beyond this range will be clipped to its min/max sup-
ported by the CPU. The options are
Default Max Frequency,
100Mhz, 150MHz,
200MHz, 250MHz, 300MHz, 350MHz, 400MHz, 450MHz, 500MHz, 550MHz, 600MHz,
650MHz, 700MHz, 750MHz, 800MHz, 850MHz, 900MHz, 950MHz, 1000MHz, 1050MHz,
1100MHz, 1150MHz, and 1200MHz.
Disable Turbo GT frequency
Use this feature to disable Turbo GT frequency. If set to Enabled, Turbo GT frequency
becomes disabled. If set to Disabled, GT frequency limiters will be removed. The options
are Enabled and
Disabled
.
VT-d
Select Enabled to activate Intel Virtualization Technology support for Direct I/O VT-d
by
reporting the I/O device assignments to VMM through the DMAR ACPI Tables. This feature
offers fully-protected I/O resource-sharing across the Intel platforms, providing the user with
greater reliability, security and availability in networking and data-sharing. The options are
Disabled and
Enabled
.
SW Guard Extensions (SGX)
Select Enabled to activate the Software Guard Extensions (SGX). The options are Disabled,
Enabled, and
Software Controlled
.
Select Owner EPOCH input type
There are three Owner EPOCH modes (each EPOCH is 64 bit). The options are
No Change
in Owner EPOCHs
, Change to New Random Owner EPOCHs, and Manual User Defined
Owner EPOCHs.
GNA Device (B0:D8:F0)
Use this feature to enable SA GNA device. The options are
Enabled
and Disabled.
X2APIC Opt Out
The feature "VT-D" must be enabled for this feature to be configurable. Use this feature to
enable or disable X2APIC Opt Out. The options are Enabled and
Disabled
.
