MSI H67MA-E35 (B3) - DRAM Ratio Settings; Adjusted DRAM Frequency; DRAM Timing Mode; Advanced DRAM Configuration

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MS-7680 Manboard
DRAM Rato
Ths settng controls the rato of memory frequency to enable the memory to run at df
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ferent frequency combnatons.
Adjusted DRAM Frequency
It shows the adjusted DRAM frequency. Read-only.
DRAM Tmng Mode
Select whether DRAM tmng s controlled by the SPD (Seral Presence Detect) EE
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PROM on the DRAM module. Settng to [Auto] enables DRAM tmngs and the followng
“Advanced DRAM Con󰘰guraton” sub-menu to be determned by BIOS based on the
con󰘰guratons on the SPD. Selectng [Lnk] or [Unlnk] allows users to con󰘰gure the
DRAM tmngs and the followng related “Advanced DRAM Con󰘰guraton” sub-menu
manually.
Advanced DRAM Con󰘰guraton
Press <Enter> to enter the sub-menu.
Command Rate
Ths settng controls the DRAM command rate.
tCL
Ths controls the CAS latency, whch determnes the tmng delay (n clock cycles)
before SDRAM starts a read command after recevng t.
tRCD
When DRAM s refreshed, both rows and columns are addressed separately. Ths
setup tem allows you to determne the tmng of the transton from RAS (row ad
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dress strobe) to CAS (column address strobe). The less the clock cycles, the faster
the DRAM performance.
tRP
Ths settng controls the number of cycles for Row Address Strobe (RAS) to be
allowed to precharge. If nsu󰘲cent tme s allowed for the RAS to accumulate ts
charge before DRAM refresh, refreshng may be ncomplete and DRAM may fal
to retan data. Ths tem apples only when synchronous DRAM s nstalled n the
system.
tRAS
Ths settng determnes the tme RAS takes to read from and wrte to memory cell.
tRFC
Ths settng determnes the tme RFC takes to read from and wrte to a memory
cell.
tWR
Mnmum tme nterval between end of wrte data burst and the start of a precharge
command. Allows sense ampl󰘰ers to restore data to cells.
tWTR
Mnmum tme nterval between the end of wrte data burst and the start of a col
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umn-read command. It allows I/O gatng to overdrve sense ampl󰘰ers before read
command starts.
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