MSI K9A Platinum User Manual page 57

M S-7376 M ainboard
DRAM Timing Mode
Setting to [Auto] enables DRAM CAS# Latency automatically to be determined by
BIOS based on the configurations on the SPD (Serial Presence Detect) EEPROM
on the DRAM module.
Bank Interleaving
This field selects 2-bank or 4-bank interleave for the installed SDRAM. Disable
the function if 16MB SDRAM is installed.
1T/2T M emory Timing
This field controls the SDRAM command rate. Selecting [1T] makes SDRAM
signal controller to run at 1T (T=clock cycles) rate. Selecting [2T] makes SDRAM
signal controller run at 2T rate.
Memory Hole at 15M Addr.
You can reserve this area of system memory for ISA adapter ROM. W hen this
area is reserved, it cannot be cached. The user information of peripherals that
need to us e this area of sys tem memory us ually discus ses their memory
requirements.
Unganged M ode support
The Unganged mode can split the available bandwidth into two distinct channels
,and this item is used to disable/ enable the unganged mode.
FSB/Memory Ratio
This item will allow you to adjust the FSB/Ratio of the memory.
Adjusted DDR M emory Frequency
It shows the adjusted DDR Memory frequency. Read-only.
Auto Disable DIM M/PCI Frequency
W hen set to [Enabled], the system will remove (turn off) clocks from empty DIMM and
PCI slots to minimize the electromagnetic interference (EMI).
CPU Voltage / M omory Voltage / NB Voltage / Hypertransport Voltage
These items dispaly the power status of CPU, Memory, FSB and chipset. Read-only.
Spread Spectrum
W hen the motherboard's clock generator pulses, the extreme values (spikes) of the
pulses create EMI (Electromagnetic Interference). The Spread Spectrum function
reduces the EMI generated by modulating the pulses so that the spikes of the pulses
are reduced to flatter curves. If you do not have any EMI problem, leave the setting at
Disabled for optimal system stability and performance. But if you are plagued by EMI,
set to Enabled for EMI reduction. Remember to disable Spread Spectrum if you are
overclocking because even a slight jitter can introduce a temporary boost in clock
speed which may just cause your overclocked processor to lock up.
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