MSI 975X PLATINUM User Guide - Page 67

FSB & Memory Clock Ratio

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MS-7246 Mainboard FSB & Memory Clock Ratio These settings control the ratio of FSB Clock and Memory Clock to enable the CPU & Memory to run at different frequency combinations. Please note that the setting options vary according to the CPU FSB Clock preset. Memory speed = FSB x Memory Ratio x Double Data Rate (ex. 880 MHz = 266 x 1.66 x 2). Setting options: [Auto], [1:1], [1:1.25], [1:1.33], [1:1.66]. Memory Clock Setting This item shows the memory clock. Read only. M emory Voltage Adjusting the memory voltage can increase the memory speed. Any changes made to this setting may cause a stability issue, so changing the memory voltage for long-term purpose is NOT recommended. Adjust CPU Ratio This item allows you to adjust the CPU ratio. It is available only when the processor supports this function. CPU FSB Frequency This item allows you to select the CPU Front Side Bus clock frequency (in MHz) and overclock the processor by adjusting the FSB clock to a higher frequency. CPU Clock = CPU FSB Frequency * CPU Ratio. Setting options: [133 MHz]~[450 MHz]. PCI-E Frequency This item allows you to select the PCI-E clock frequency (in MHz) and overclock the processor by adjusting the PCI-E clock to a higher frequency. Setting options: [100]~ [150]. CPU Voltage The settings are used to adjust the CPU clock multiplier (ratio) and CPU core voltage (Vcore). These settings offer users a tool to overclock the system. Setting options: [Current Voltage], [+12.5mV]~[+400mV]. PCI Express Voltage PCI Express voltage is adjustable in the individual fields, allowing you to increase the performance of your PCI Express card when overclocking, but the stability may be af f ec ted. Auto Detect PCI Clk This item is used to auto detect the PCI slots. W hen set to [Enabled], the system will remove (turn off) clocks from empty PCI slots to minimize the electromagnetic interference (EMI). Settings: [Enabled], [Disabled]. 3-24

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MS-7246 Mainboard
3-24
FSB & Memory Clock Ratio
These settings control the ratio of FSB Clock and Memory Clock to enable the CPU &
Memory to run at different frequency combinations. Please note that the setting
options vary according to the CPU FSB Clock preset. Memory speed = FSB x Memory
Ratio x Double Data Rate (ex. 880 MHz = 266 x 1.66 x 2). Setting options: [Auto], [1:1],
[1:1.25], [1:1.33], [1:1.66].
Memory Clock Setting
This item shows the memory clock. Read only.
Memory Voltage
Adjusting the memory voltage can increase the memory speed. Any changes made to
this setting may cause a stability issue, so
changing the memory voltage for
long-term purpose is NOT recommended
.
Adjust CPU Ratio
This item allows you to adjust the CPU ratio. It is available only when the processor
supports this function.
CPU FSB Frequency
This item allows you to select the CPU Front Side Bus clock frequency (in MHz) and
overclock the processor by adjusting the FSB clock to a higher frequency. CPU Clock
= CPU FSB Frequency * CPU Ratio. Setting options: [133 MHz]~[450 MHz].
PCI-E Frequency
This item allows you to select the PCI-E clock frequency (in MHz) and overclock the
processor by adjusting the PCI-E clock to a higher frequency. Setting options: [100]~
[150].
CPU Voltage
The settings are used to adjust the CPU clock multiplier (ratio) and CPU core voltage
(Vcore). These settings offer users a tool to overclock the system. Setting options:
[Current Voltage], [+12.5mV]~[+400mV].
PCI Express Voltage
PCI Express voltage is adjustable in the individual fields, allowing you to increase the
performance of your PCI Express card when overclocking, but the stability may be
affected.
Auto Detect PCI Clk
This item is used to auto detect the PCI slots. When set to [Enabled], the system will
remove (turn off) clocks from empty PCI slots to minimize the electromagnetic inter-
ference (EMI). Settings: [Enabled], [Disabled].