1. System BIOS
Express5800/B120g-h Maintenance Guide
50
Chapter 2 Useful Features
Option Parameter
Description
Processor Information
–
–
Processor Power
Management
– –
DCU IP Prefetcher
Disabled
[Enabled]
Enables or disables Data Cache Unit (DCU) IP Prefetcher.
DCU Streamer Prefetcher
Disabled
[Enabled]
Enables or disables DCU Streamer Prefetcher.
Hardware Prefetcher
Disabled
[Enabled]
Enables or disables Hardware Prefetcher.
Adjacent Cache Line Prefetch Disabled
[Enabled]
Enables or disables the optimal access from memory to cache.
Execute Disabled Bit
Disabled
[Enabled]
Enables or disables Execute Disable Bit. This option is displayed
only when the installed processor supports this feature.
VT-x Disabled
[Enabled]
Enables or disables Intel Virtualization Technology.
Active Processor Cores
1-[X]
Specifies the number of active cores in processor.
The selectable number of cores depends on processor installed.
X denotes the maximum number of cores.
Hyper-Threading Disabled
[Enabled]
Enables or disables the feature to simultaneously execute two
threads in a single core.
This option is displayed only when the installed processor
supports this feature.
PPIN Support
[Disabled]
Enabled
Enables or disables Protected Processor Inventory Number
(PPIN). This option is displayed only when the installed
processor supports this feature.
X2APIC Disabled
[Enabled]
Enables or disables X2APIC feature.
This item is selectable when Enabled is selected for VT-x and
VT-d.
The X2APIC feature must be enabled when using an OS shown
below:
– Windows Server 2012 R2 (used in UEFI Mode)
The X2APIC feature must be disabled when using an OS shown
below:
– Windows Server 2008 R2 (used in Legacy Mode)
See
Chapter 1 Installing Windows
in
Installation
Guide
, and determine whether this feature is
enabled or disabled according to description in
"
Before Starting Setup
".
[ ]: Factory setting
