BIOS Setup Utility
SY-P4X400 DRAGON Ultra
45
DRAM Timing/Drive Control
Setting
Description
Note
DRAM Timing
By SPD
Default
Manual
If enable the DRAM will auto
detect the DRAM timing.
SDRAM CAS
2.5
Default
Latency
2
When synchronous DRAM is
installed, the number of clock
cycles of CAS latency
depends on the DRAM timing.
Do not reset this field from the
default value specified by the
system designer.
Disabled
Default
Bank Interleave
2 Bank
4 Bank
Increase DRAM performance.
2T
Precharge to
Active(Trp)
3T
Increase DRAM performance.
Default
6T
Active to
Precharge(Tras)
7T
Increase DRAM performance.
Default
3T
Default
Active to
CMD(Trcd)
2T
Increase DRAM performance.
1T Command
DRAM Command
Rate
2T Command
Increase DRAM performance.
Default
4
Default
DRAM Burst Len
8
Increase DRAM performance.
