User Manual

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 application code can execute

and where it cannot, thus preventing a worm or a virus from ﬂ 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.

Adjacent Cache Line Prefetch (Available when supported by the CPU)