Supermicro X8QB6-F User Manual page 71

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Cache L1 : This item displays the size of Cache L1 of the CPU for the moth-
erboard.
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Cache L2 : This item displays the size of Cache L2 of the CPU for the moth-
erboard.
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Cache L3 : This item displays the size of Cache L3 of the CPU for the moth-
erboard.
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Ratio Status : This item displays the status of the CPU ratio.
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Ratio Actual Value
CPU Ratio
This item allows the user to set the ratio between the CPU Core Clock and the FSB
Frequency. The default setting is 15.
Spread Spectrum Mode
Select Enable to enable Clock Spectrum modulation support, which will allow the
BIOS to monitor and attempt to reduce the level of Electromagnetic Interference
caused by the components whenever needed. The options are Disabled and En-
abled.
Sever Class
Use this item to identify the server class for your system so that the prefectcher
settings listed below can be correctly confi gured. The options are Enterprise, HPC
(High Performance Cluster) and Custom (for customized servers).
Hardware Prefetcher (Available when supported by the CPU)
If 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)
The CPU prefetches the cache line for 64 bytes if this feature is set to Disabled.
The CPU prefetches both cache lines for 128 bytes as comprised if this feature is
set to Enabled.
MPS and ACPI MADT Ordering
This feature allows the user to confi gure the MPS (Multi-Processor Specifi ca-
tions) and ACPI settings for your motherboard. Select Modern Ordering if XP
or a newer version of Windows OS is used in the motherboard. Select Legacy
: This item displays the actual value of the CPU ratio.
5-5
Chapter 5: AMI BIOS