ECS P4IBMGL2 Manual page 33

Password Check
If you have entered a password for the system, use this item to determine, if
the password is required to enter the Setup Utility (Setup) or required both at
start-up and to enter the Setup Utility (Always).
L2 Cache
Leave these items enabled since all the processors that can be installed on
this board have internal L2 cache memory.
System BIOS Cacheable
If you enable this item, a segment of the system BIOS will be copied to main
memory for faster execution.
SDRAM Frequency
This item determines frequency of SDRAM memory.
SDRAM Timing By SPD
This item allows you to enable or disable the SDRAM timing defined by the
Serial Presence Detect electrical.
SDRAM CAS# Latency
This item determines 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 sig-
nals, used when SDRAM is written to, read from, or refreshed. Disabled gives
faster performance; and Enabled gives more stable performance.
SDRAM RAS# 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.
29