MSI MS-7530 - Page 56

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MS-7530 Mainboard
Adjusted CPU Frequency (MHz)
It shows the adjusted CPU frequency (FSB x Ratio). Read-only.
Advance DRAM Configuration
Press <Enter> to enter the sub-menu and the following screen appears.
DRAM Timing Mode
This field has the capacity to automatically detect all of the DRAM timing. If you
set this field to [Manual], some fields will appear and selectable.
CAS Latency(CL)
When the DRAM Timing Mode sets to [Manual], the field is adjustable.This
controls the CAS latency, which determines the timing delay (in clock cycles)
before SDRAM starts a read command after receiving it.
tRCD
When the DRAM Timing Mode sets to [Manual], the field is adjustable. 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.
tRP
When the DRAM Timing Mode sets to [Manual], this field is adjustable. 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, 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], this field is adjustable. This
setting determines the time RAS takes to read from and write to memory cell.