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Enhanced Halt State (C1E)
Select Enable to enable "Enhanced Halt State" support, which will significantly reduce the
CPU's power consumption by minimizing CPU's clock cycles and reduce voltage during
a "Halt State." The options are Disable and Enable.
Package C State Control
Package C State
Use this feature to optimize and reduce CPU package power consumption in the idle
mode. Note that the changes you've made in this setting will affect all CPU cores or the
circuits of the entire system. The options are C0/C1 state, C2 state, C6 (non Retention)
state, C6 (Retention) state, No Limit, and Auto.
CPU1 Core Disable Bitmap
Available Bitmap:
This feature displays the available bitmap.
Disable Bitmap
Enter 0 to enable this feature for all CPU cores. Enter FFFFFFFFFFF to disable this feature
for all CPU cores. Note that at least one core per CPU must be enabled. Disabling all cores
is not allowed. The default setting is 0.
Hyper-threading (ALL)
Select Enable to support Intel Hyper-threading Technology to enhance CPU performance.
The options are Disable and Enable.
Hardware Prefetcher
If this feature is set to Enable, the hardware prefetcher will prefectch data from the main
system memory to Level 2 cache to help expedite data transaction to enhance memory
performance. The options are Disable and Enable.
Adjacent Cache Prefetch
Select Enable for the CPU to prefetch both cache lines for 128 bytes as comprised. Select
Disable for the CPU to prefetch both cache lines for 64 bytes. The options are Disable and
Enable.
DCU Streamer Prefetcher
If this feature is set to Enable, the Data Cache Unit (DCU) streamer prefetcher will prefetch
data streams from the cache memory to the DCU to speed up data accessing and processing
to enhance CPU performance. The options are Disable and Enable.
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Chapter 4: UEFI BIOS
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