User`s manual

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3
BIOS Setup
3.1.3.9 T(RC)
Row-Cycle delay. Set the “System Performance” field to Optimal
if you want to use the delay time recommended by the DIMM
manufacturer.
3.1.3.10 T(RFC)
Auto refresh cycle time. Set the “System Performance” field to
Optimal if you want to use the delay time recommended by the
DIMM manufacturer.
3.1.3.11 SuperBypass
If this field is set to Enabled, the chip allows low-latency accesses
to memory. However, memory incompatibility may occur. If the
system becomes unstable after enabling this function, set this field
to Disabled.
3.1.3.12 Sync Mode Memory Bypass
The options are Auto, Enabled and Disabled.
3.1.3.13 Data Scavenged Rate
The options are Fast and Normal.
3.1.3.14 DIMM1 Driving Strength, DIMM2 Driving Strength and
DIMM3 Driving Strength
This field is used to select the DRAM signal driving strength of
DIMM 1, DIMM 2 and DIMM 3.
3.1.3.15 DIMM1 Driving Slew Rate, DIMM2 Driving Slew Rate and
DIMM3 Driving Slew Rate
This field is used to select the speed of the DRAM signal slew
rate from high to low or low to high.
3.1.3.16 AGP Aperture Size (MB)
This field is relevant to the memory-mapped graphics data of the
AGP card installed in your system. Leave this in its default setting.