MSI G4M-e43 User Manual page 25

tRFC
When the dRaM timing Mode sets to [Manual], the field is adjustable. this set-
ting determines the time RFC takes to read from and write to a memory cell.
tWR
When the dRaM timing Mode is set to [Manual], the field is adjustable. it speci-
fies the amount of delay (in clock cycles) that must elapse after the completion
of a valid write operation, before an active bank can be precharged. this delay
is required to guarantee that data in the write buffers can be written to the
memory cells before precharge occurs.
tRRd
When the dRaM timing Mode sets to [Manual], the field is adjustable. Speci-
fies the active-to-active delay of different banks.
tWtR
When the dRaM timing Mode is set to [Manual], the field is adjustable. this
item controls the Write data in to Read Command delay memory timing. this
constitutes the minimum number of clock cycles that must occur between the
last valid write operation and the next read command to the same internal bank
of the ddR device.
FSB/dRaM Ratio
this item will allow you to adjust the ratio of FSB to memory.
adjusted dRaM Frequency (MHz)
it shows the adjusted memory frequency. Read-only.
adjust PCi-e Frequency (MHz)
this item allows you to adjust the PCi-e frequency.
auto disable dRaM/PCi Frequency
When set to [enabled], the system will remove (turn off) clocks from empty diMM
and PCi slots to minimize the electromagnetic interference (eMi).
dRaM Voltage(V)/ nB Voltage(V)/ CPu Vtt(V)
these items are used to adjust the voltage of CPu, Memory and chipset.
Spread Spectrum
When the motherboard's clock generator pulses, the extreme values (spikes) of
the pulses create eMi (electromagnetic interference). the Spread Spectrum func-
tion 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 proces-
sor to lock up.
iMPoRtant
* 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, select the
value of Spread Spectrum for eMi reduction.
MS-7592
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