Chapter 6: BIOS
Table 6-3. CPU and Clock Configuration Sub-menu
Menu Option
Ratio CMOS Setting
Hardware Prefetcher
Adjacent Cache Line Prefetch
Max CPUID Value Limit
Intel® Virtualization Tech
Intel HT Technology
Active Processor Cores
Description
Sets the ratio between CPU core clock and the FSB frequency. The default setting depends upon the type of CPU installed on the mainboard. The default setting for the CPU installed in your mainboard is 18. Press + or - on your keyboard to change this value.
NOTE: If an invalid ratio is entered, the AMI BIOS will restore the setting to a previous state.
If set to Enabled, the hardware prefetcher will prefetch streams of data and instructions from the main memory to the L2 cache in the forward or backward manner to improve CPU performance. Options are Enabled and DISABLED.
For UP platforms leave it enabled. for DP/MP servers, this setting may be used to tune performance to the specific application.
The CPU fetches the cache line for
For UP platforms leave it enabled. for DP/MP servers, this setting may be used to tune performance to the specific application.
This setting is Disabled for Windows systems.
Select Enabled to use this Virtualization Technology feature to allow one platform to run multiple operating systems and applications in independent partitions, creating multiple “virtual” systems in one physical computer system. The options are Enabled and DISABLED. Please refer to the Intel website for further detailed information.
NOTE: A full reset of the system is required when you change this setting.
The Execute Disable Bit allows the processor to designate areas in the system memory where an application code can be executed, and where it cannot. This prevents a worm or virus from flooding illegal codes into the system to overwhelm the processor or damage the system during an attack. The default setting is Enabled.
Please refer to the Intel and Microsoft websites for more information.
When this setting is DISABLED, only one thread per enabled core is enabled. The default for this setting is Enabled.
Sets the number of cores to enable in each processor package. Default is ALL.
Table 6-4. IDE Configuration Menu
Menu Option
SATA#1
Configuration
Configure SATA#1 as
Max Ports on SATA#1
Description
If Compatible is selected, this sets SATA#1 to legacy compatibility mode. Selecting Enhanced sets SATA#1 to native SATA mode. The options are DISABLED, Compatible and ENHANCED.
This setting allows you to select the drive type for SATA#1. The options are IDE, RAID and AHCI. Choosing the RAID or AHCI changes which further menu options appear on the screen.
This setting allows you to specify the max ports for SATA#1 when RAID configuration is selected for SATA#1 Configuration. The options are 4 PORTS or 6 Ports.
