PC Chips M909G Series User Manual page 50

Motherboard User's Guide
SDRAM CAS # Latency
This item determins the operation of SDRAM memory CAS
(column address strobe.) It is recommended that you leave this
item at the default value. The 2T setting requires faster memory
that specifically supports this mode.
SDRAM RAS# Precharge
Select the number of CPU clocks allocated for the Row Address
Strobe (RAS#) signal to accumulate its charge before the
SDRAM is refreshed. If insufficient time is allowed, refresh may
be incomplete and data lost.
SDRAM RAS# to CAS# Delay
This field lets you insert a timing delay between the CAS and
RAS strobe signals, used when SDRAM is written to, read from,
or refreshed. Disabled gives faster performance; and Enabled
gives more stable performance.
SDRAM Precharge Delay
The precharge time is the number of cycles it takes for SDRAM
to accumulate its charge before refresh.
Hyper Threading Function
If your P4 CPU is not HT CPU, this item will be hidden. If your
P4 CPU is HT CPU, BIOS will show this item. You can set
"Disabled" or "Enabled" to control HT CPU support in O.S. Set
"Enabled" to test HT CPU function.
Spread Spectrum
If you enable spread spectrum, it can significantly reduce the EMI
(Electro-Magnetic Interference) generated by the system.
Auto Detect DIMM/PCI Clock
When this item is enabled, BIOS will disable the clock signal of
free DIMM/PCI slots.
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