H61B UEFI BIOS Manual
9
Limit CP UID Maximum
When the computer is booted up, the operating system executes the CPUID
instruction to identify the processor and its capabilities. Before it can do so, it must
first query the processor to find out the highest input value CPUID recognizes. This
determines the kind of basic information CPUID can provide the operating system.
Options: Dis abled (Default) / Enabled
Execute-Disable Bit
XD can prevent certain classes of malicious buffer overflow attacks when combined
with a supporting OS (Windows Server 2003 SP1, Windows XP SP2, SuSE Linux
9.2, RedHat Enterp ris e 3 Update 3. ).
Options: Enabled (Default) / Disabled
Hardware Prefetcher
The processor has a hardware prefetcher that automatically analyzes its requirements
and p refetches data and ins tructions from the memory into the Level 2 cache that are
likely to be required in the near future. This reduces the latency associated with
memory reads.
Options: Enabled (Default) / Disabled
Adjacent Cache Line Prefetch
The processor has a hardware adjacent c ache line prefetch mechanism that
automatically fetches an extra 64-byte cache line whenever the processor requests for
a 64-byte cache line. This reduces cache latency b y making the next c ache line
immediately available if the processor requires it as well.
Options: Enabled (Default) / Disabled
Intel Virtualization Technology
Virtualization Techno lo gy can virtually separate your system resourc e into several
parts, thus enhance the performance when running virtual machines or multi
interface systems.
Options: Dis abled (Default) / Enabled
Power Technology
This item enables the power management features.
Options: Energy Efficient (Default) / Disabled / Custom
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