Gigabyte GA-G31-S3L Manual - Page 49

CPU Host Frequency Mhz, PCI Express Frequency Mhz, C.I.A.2, Performance Enhance, System Memory

Page 49 highlights

CPU Host Frequency (Mhz) Allows you to manually set the CPU host frequency. This item is configurable only if the CPU Host Clock Control option is enabled. The adjustable range is from 100 MHz to 700 MHz. For an 800 MHz FSB CPU, set this item to 200 MHz. For a 1066 MHz FSB CPU, set this item to 266 MHz. For a 1333 MHz FSB CPU, set this item to 333 MHz. Important It is highly recommended that the CPU frequency be set in accordance with the CPU specifications. PCI Express Frequency (Mhz) Allows you to manually set the PCIe clock frequency. The adjustable range is from 90 MHz to 150 MHz. Auto sets the PCIe clock frequency to standard 100 MHz. (Default: Auto) C.I.A.2 CPU Intelligent Accelerator 2 (C.I.A.2) is designed to automatically adjust CPU computing power to maximize system performance. C.I.A.2 allows your system bus to be changed dynamically based on CPU loading through the use of 5 preset states. Note: System stability varies, depending on your system hardware components. Disabled Cruise Disables the use of C.I.A.2. (Default) Increases CPU frequency by 5% or 7% depending on CPU loading. Sports Racing Turbo Full Thrust Increases CPU frequency by 7% or 9% depending on CPU loading. Increases CPU frequency by 9% or 11% depending on CPU loading. Increases CPU frequency by 15% or 17% depending on CPU loading. Increases CPU frequency by 17% or 19% depending on CPU loading. Warning: Before using C.I.A.2, please first verify the overclocking capability of your CPU. As stability is highly dependent on system components, when system instability occurs after overclocking, lower the overclocking ratio. Performance Enhance Allows the system to operate at three different performance levels. Standard Lets the system operate at its basic performance level. Turbo Extreme Lets the system operate at its good performance level. (Default) Lets the system operate at its best performance level. System Memory Multiplier (SPD) Allows you to set the system memory multiplier. Options are dependent on CPU FSB. Auto sets memory multiplier according to memory SPD data. (Default: Auto) Memory Frequency (Mhz) The first memory frequency value is the normal operating frequency of the memory being used; the second is the memory frequency that is automatically adjusted according to the CPU Host Frequency (Mhz) and System Memory Multiplier settings. - 49 - BIOS Setup

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- 49 -
BIOS Setup
CPU Host Frequency (Mhz)
Allows you to manually set the CPU host frequency. This item is configurable only if the
CPU
Host Clock Control
option is enabled. The adjustable range is from 100 MHz to 700 MHz.
For an 800 MHz FSB CPU, set this item to 200 MHz.
For a 1066 MHz FSB CPU, set this item to 266 MHz.
For a 1333 MHz FSB CPU, set this item to 333 MHz.
Important
It is highly recommended that the CPU frequency be set in accordance with the CPU
specifications.
PCI Express Frequency (Mhz)
Allows you to manually set the PCIe clock frequency. The adjustable range is from 90 MHz to
150 MHz.
Auto
sets the PCIe clock frequency to standard 100 MHz. (Default: Auto)
C.I.A.2
CPU Intelligent Accelerator 2 (C.I.A.2) is designed to automatically adjust CPU computing power
to maximize system performance. C.I.A.2 allows your system bus to be changed dynamically
based on CPU loading through the use of 5 preset states.
Note: System stability varies, depending on your system hardware components.
Disabled
Disables the use of C.I.A.2. (Default)
Cruise
Increases CPU frequency by 5% or 7% depending on CPU loading.
Sports
Increases CPU frequency by 7% or 9% depending on CPU loading.
Racing
Increases CPU frequency by 9% or 11% depending on CPU loading.
Turbo
Increases CPU frequency by 15% or 17% depending on CPU loading.
Full Thrust
Increases CPU frequency by 17% or 19% depending on CPU loading.
Warning:
Before using C.I.A.2, please first verify the overclocking capability of your CPU.
As stability is highly dependent on system components, when system instability occurs after
overclocking, lower the overclocking ratio.
Performance Enhance
Allows the system to operate at three different performance levels.
Standard
Lets the system operate at its basic performance level.
Turbo
Lets the system operate at its good performance level. (Default)
Extreme
Lets the system operate at its best performance level.
System Memory Multiplier (SPD)
Allows you to set the system memory multiplier. Options are dependent on CPU FSB.
Auto
sets
memory multiplier according to memory SPD data. (Default: Auto)
Memory Frequency (Mhz)
The first memory frequency value is the normal operating frequency of the memory being used;
the second is the memory frequency that is automatically adjusted according to the
CPU Host
Frequency (Mhz)
and
System Memory Multiplier
settings.