MSI K8MM-ILSR

3-12
MS-6741 Micro-ATX Mainboard
Burst Length
This setting allows you to set the size of Burst-Length for DRAM. Bursting feature is
a technique that DRAM itself predicts the address of the next memory location to be
accessed after the first address is accessed. To use the feature, you need to define
the burst length, which is the actual length of burst plus the starting address and
allows internal address counter to properly generate the next memory location. The
bigger the size, the faster the DRAM performance. Settings: 4 Beat and 8 Beat.
CAS Latency (CL)
This controls the timing delay (in clock cycles) before SDRAM starts a read command
after receiving it. Settings: Auto, CL2.0, CL2.5, CL3.0. CL2 increases the system
performance the most while CL3.0 provides the most stable performance.
TRCD
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. Settings: 2CLK to 5CLK.
TRAS
This setting determines the time RAS takes to read from and write to a memory cell.
Setting options: Auto, 5CLK to 15CLK.
TRP
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.
Setting options: Auto, 2CLK to 6CLK.
AGP Mode
The item sets an appropriate mode for the installed AGP card. Setting options: 1x, 2x,
4x. Select 4x only if your AGP card supports it.
AGP Fast Write
This option enables or disables the AGP Fast Write feature. The Fast Write technology
allows the CPU to write directly to the graphics card without passing anything through
the system memory and improves the AGP 4X speed. Select Enabled only when the
installed AGP card supports this function. Settings: Enabled, Disabled.
AGP Aperture Size
This setting controls just how much system RAM can be allocated to AGP for video
purposes. The aperture is a portion of the PCI memory address range dedicated to
graphics memory address space. Host cycles that hit the aperture range are forwarded
to the AGP without any translation. The option allows the selection of an aperture
size of 4MB, 8MB, 16MB, 32MB, 64MB, 128MB, and 256 MB.