Chapter 4: AMI BIOS
4-11
Performance
Hyper-threading [ALL]
Select Enabled to support Intel Hyper-threading Technology to enhance
CPU performance. The options are Enabled and Disabled.
Execute-Disable Bit Capability (Available if supported by the OS
& the CPU)
Select Enabled to enable the Execute-Disable Bit which will allow the
processor to designate areas in the system memory where an applica-
tion code can execute and where it cannot, thus preventing a worm or a
virus from ooding illegal codes to overwhelm the processor or damage
the system during an attack. The default is Enabled. (Refer to Intel and
Microsoft Web sites for more information.)
PPIN Control
Select Enable to unlock the PPIN control. The options are Enabled and
Disabled.
Hardware Prefetcher (Available when supported by the CPU)
If set to Enabled, the hardware prefetcher will prefetch streams of data
and instructions from the main memory to the L2 cache to improve CPU
performance. The options are Disabled and Enabled.
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