MSI 760GM-P33 - Manual (Page 27)

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MS-7623
faster the DraM performance.
trP
When the DraM timing Mode sets to [Manual], the field is adjustable. this set-
ting controls the number of cycles for row address Strobe (raS) to be allowed
to precharge. if insufficient time is allowed for the raS to accumulate its charge
before DraM refresh may be incomplete and DraM may fail to retain data.
this item applies only when synchronous DraM is installed in the system.
traS
When the DraM timing Mode sets to [Manual], the field is adjustable. this set-
ting determines the time raS takes to read from and write to a memory cell.
trtP
When the DraM timing Mode sets to [Manual], the field is adjustable. this set-
ting controls the time interval between a read and a precharge command.
trC
When the DraM timing Mode sets to [Manual], the field is adjustable. the
row cycle time determines the minimum number of clock cycles a memory row
takes to complete a full cycle, from row activation up to the precharging of the
active row.
tWr
When the DraM timing Mode sets 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 sets 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.
1t/2t Memory timing
When the DraM timing Mode sets to [Manual], the field is adjustable. this field
controls the SDraM command rate. Selecting [1t] makes SDraM signal con-
troller to run at 1t (t=clock cycles) rate. Selecting [2t] makes SDraM signal
controller run at 2t rate.
SoftWare Memory hole
When the DraM timing Mode sets to [Manual], the field is adjustable. this field
allows you to enable or disable SoftWare Memory hole.
FSB/DraM ratio
this item allows you to set the FSB/DraM ratio.
adjusted DraM Frequency (Mhz)
it shows the adjusted DDr memory frequency. read-only.
ht link Speed
this item allows you to set the hyper-transport link speed. Setting to [auto], the
system will detect the ht link speed automatically.
adjust PCi-E Frequency (Mhz)
this item allows you to set the PCi-E frequency (in Mhz).
CPU Voltage (V)
this item will allow you to adjust the CPU voltage.
DraM Voltage (V)
this item will allow you to adjust the Memory voltage.
nB Voltage (V)
this item will allow you to adjust the north Bridge voltage.
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.
the greater the Spread Spectrum value is, the greater the EMi is reduced, and
the system will become less stable. For the most suitable Spread Spectrum
value, please consult your local EMi regulation.
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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