Supermicro X9DRT-IBQF User Manual download pdf (Page 83)

Chapter 4: AMI BIOS

4-7

RTID(RecordTypesIDs)

This feature displays the total number of Record Type IDs for local and remote

pools. The options are Optimal and Alternate.

Hyper-threading

Select Enabled to support Intel Hyper-threading Technology to enhance CPU per-

formance. The options are Enabled and Disabled.

Active Processor Cores

Set to Enabled to use a processor's second core and above. (Please refer to Intel's

website for more information.) The options are All, 1, 2, 4, and 6.

Limit CPUID Maximum

This feature allows the user to set the maximum CPU ID value. Enable this function

to boot the legacy operating systems that cannot support processors with extended

CPUID functions. The options are Enabled and Disabled (for the Windows OS).

Execute-DisableBit(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 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.)

Intel

AES-NI

Select Enable to use the Intel Advanced Encryption Standard (AES) New Instruc-

tions (NI) to ensure data security. The options are Enabled and Disabled.

MLCStreamerPrefetcher(AvailablewhensupportedbytheCPU)

If set to Enabled, the MLC (mid-level cache) streamer 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.

MLCSpatialPrefetcher(AvailablewhensupportedbytheCPU)

If this feature is set to Disabled, The CPU prefetches the cache line for 64 bytes.

If this feature is set to Enabled the CPU fetches both cache lines for 128 bytes as

comprised. The options are Disabled and Enabled.

DCUStreamerPrefetcher(AvailablewhensupportedbytheCPU)

Select Enabled to support Data Cache Unit (DCU) prefetch of L1 data to speed

up data accessing and processing in the DCU to enhance CPU performance. The

options are Disabled and Enabled.

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Supermicro X9DRT-IBQF User Manual Page 83