MSI X58M User Manual
Page 67
BIOS Setup
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MS-7593
3-21
BIOS Setup
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MS-7593
1N/2N Memory Tmng
Ths tem controls the SDRAM command rate. Select [1N] makes SDRAM sgnal
controller to run at 1N (N=clock cycles) rate. Selectng [2N] makes SDRAM sgnal
controller run at 2N rate.
CAS Latency (CL)
Ths controls the CAS latency, whch determnes the tmng delay (n clock cycles)
before SDRAM starts a read command after recevng t.
tRCD
When DRAM s refreshed, both rows and columns are addressed separately. Ths
setup tem allows you to determne the tmng of the transton from RAS (row ad-
dress strobe) to CAS (column address strobe). The less the clock cycles, the faster
the DRAM performance.
tRP
Ths settng controls the number of cycles for Row Address Strobe (RAS) to be
allowed to precharge. If nsufficent tme s allowed for the RAS to accumulate ts
charge before DRAM refresh, refresh may be ncomplete and DRAM may fal to
retan data. Ths tem apples only when synchronous DRAM s nstalled n the sys-
tem.
tRAS
Ths settng determnes the tme RAS takes to read from and wrte to memory cell.
Advance Memory Settng
Settng to [Auto] enables the advance memory tmng automatcally to be determned
by BIOS. Settng to [Manual] allows you to set advanced memory tmngs.
Memory Rato
Ths tem allows you to set the memory multpler.
Adjusted DRAM Frequency (MHz)
It shows the adjusted DDR Memory frequency. Read-only.
Uncore Rato
Ths tem allows you to set the uncore (clock speed of the L3 cache and memory con-
troller) multpler.
Adjusted Uncore Frequency (MHz)
It shows the adjusted uncore frequency (uncore rato x base clock, the clock speed of
the L3 cache and memory controller). Read-only.
ClockGen Tuner
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