MSI 946GZ Neo Series User Manual page 65

Configure DRAM Timing by SPD
Selects whether DRAM timing is controlled by the SPD (Serial Presence Detect)
EEPROM on the DRAM module. Setting to [Auto] enables DRAM timings and the
following related items to be determined by BIOS based on the configurations on
the SPD. Selecting [Manual] allows users to configure the DRAM timings and the
following related items manually. Setting options: [Manual], [Auto].
DRAM CAS# Latency
The field controls the CAS latency, which determines the timing delay before
SDRAM starts a read command after receiving it. Setting options: [By SPD], [2.
5T], [2T]. [2T] increases system performance while 2.5T provides more stable
s ys tem perf ormance. Setting to By SPD enables DRAM CAS# Latenc y
automatically to be determined by BIOS based on the configurations on the SPD
(Serial Presence Detect) EEPROM on the DRAM module.
DRAM RAS# to CAS# Delay
This field allows you to set the number of cycles for a timing delay between the
CAS and RAS strobe signals, used when DRAM is written to, read from or
refreshed. Fast speed offers faster performance while slow speed offers
more stable performance. Setting options: [6 DRAM Clocks], [5 DRAM Clocks], [4
DRAM Clocks].
DRAM RAS# Precharge
This item 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. Setting options: [6 DRAM Clocks], [5 DRAM Clocks], [4 DRAM Clocks].
DRAM RAS Activate to Prec
This setting determines the time RAS takes to read from and write to a memory
cell. Setting options: [8~15 DRAM Clocks].
Adjusted DRAM Frequency
This read-only item shows the DDR Memory Frequency you like to use, which will
automatically change in accordanc e with the setting of Adjust DDR M emory
Frequency. Please note you must reboot the system to let the change take effect.
CPU Vcore
This item allows you to see the CPU vcore. Read only.
Adjust CPU Voltage
This item allows you to set the CPU voltage.
Adjust DDR Voltage (V)
Adjusting the DDR voltage can increase the DDR speed. Any changes made to this
setting may cause a stability issue, so changing the DDR voltage for long-term
purpose is NOT recommended.
BIOS Setup
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