MSI 970A-G45 Serie Bedienungsanleitung Seite 38

MS-7693 Mainboard
▶ DRAM Frequency
This item is used to adjust the DRAM frequency. Setting to [Auto], the system will detect
the DRAM Frequency automatically.
▶ Adjusted DRAM Frequency
It shows the adjusted Memory frequency. Read-only.
▶ DRAM Timing Mode
This field has the capacity to automatically detect the DRAM timing.
▶ Advanced DRAM Configuration
Press <Enter> to enter the sub-menu.
▶
This setting controls the DRAM command rate.
▶
This controls the CAS latency, which determines the timing delay (in clock cycles)
before SDRAM starts a read command after receiving it.
▶
When DRAM is refreshed, both rows and columns are addressed separately. This
setup item allows you to determine the timing of the transition from RAS (row address
strobe) to CAS (column address strobe). The less the clock cycles, the faster the
DRAM performance.
▶
This setting 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, refreshing may be incomplete and DRAM may fail
to retain data. This item applies only when synchronous DRAM is installed in the
system.
▶
This setting determines the time RAS takes to read from and write to memory cell.
▶
Time interval between a read and a precharge command.
▶
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.
▶
Minimum time interval between end of write data burst and the start of a precharge
command. Allows sense amplifiers to restore data to cells.
▶
Specifies the active-to-active delay of different banks.
En-28
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Command Rate
tCL
tRCD
tRP
tRAS
tRTP
tRC
tWR
tRRD
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