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X7DWE User's Manual
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Intel VT for Direct I/O (VT-d)
Select Enable to use the Intel Virtualization Technology for Direct I/O VT-d
sup-
port by reporting the I/O device assignment 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 settings are Enabled and
Disabled
. Press the
<Enter> key to enter the submenu.
4GB PCI Hole Granularity
This feature allows you to select the granularity of a PCI hole for a PCI slot. If
MTRRs are not enough, this option may be used to reduce MTRR occupation. The
options are:
256 MB
, 512 MB, 1GB and 2GB.
Memory Voltage Auto-Detect
Set to Enabled to allow the BIOS automatically detect the memory voltage accord-
ing to its SPD table. Select 1.5V-Forced to use low-power fully-buffered DIMMs
(FBDIMM). Select 1.8V-Forced to use 1.8V memory for testing. (Using the 1.8V-
Forced setting may be harmful to some 1.5V FBDIMM.) The options are:
Auto-
Detect,
1.5V-Forced and 1.8V-Forced.
Memory Branch Mode
This option determines how the two memory branches operate. System address
space can either be interleaved between the two branches or Sequential from one
branch to another. Mirror mode allows data correction by maintaining two copies
of data in two branches. Single Channel 0 allows a single DIMM population dur-
ing system manufacturing. The options are
Interleave
, Sequential, Mirroring, and
Single Channel 0.
Branch 0 Rank Sparing/Branch 1 Rank Sparing
Select
Enable
to enable the function of memory sparing for Memory Bus Branch 0
or Branch 1. The options are Enabled and
Disabled
.
Branch 0 Rank Interleaving/Branch 1 Rank Interleaving
Select enable to enable Interleaved Memory for Memory Bus Branch 0 Rank or
Branch 1 Rank. The options for Memory Interleaving are 1:1, 2:1 and
4:1
.
Enhanced x8 Detection
Select
Enabled
to enable Enhanced x8 DRAM UC Error Detection. The options
are Disabled and
Enabled
.
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