Memory Configuration Table - SOYO SY-6BB V1.0 Quick Start Manual

SY-6BB V1.0 Quick Start Guide
Step 3. Configure Memory
Your board comes with three DIMM sockets, providing support for up to 768MB of main
memory using DIMM modules from 8MB to 256MB. For 66MHz front side bus CPUs use
12ns or faster memory; for 100MHz front side bus CPUs use 8ns (100MHz, PC100
compliant) memory.

Memory Configuration Table

Number of
Memory Modules
1
2
3
RAM Type
Memory Module
Size (MB)
Note:(1) 256 MB memory modules available on PC registered DIMM only.
(2) Always install memory modules in the order prescribed in this table.
(3) Do not install unbuffered and registered memory modules together.
Important: It is of prime importance that you install DIMM modules as outlined in the table
above in order to preserve signal integrity on 100MHz front side bus systems.
Step 4. Set SW1 for power up FSB clock and AGP bus clock.
SW1 is used to adjust AGP bus clock frequency depending on the value of the front side bus
(FSB) clock, also the setting of the SW1 determines the power up FSB clock which will
remain effective until the BIOS set the FSB clock to the CMOS setting.
SW1 Setting
Note: The specification of maximum AGP bus Clock frequency is 66.6MHz.
∗
Set SW1 to open when you use a FSB 100MHz CPU such as 350MHz, 400MHz,
450MHz , or 500MHz.
∗
Set SW1 to close when you use a FSB 66MHz CPU such as 233MHz, 266MHz,
300MHz, 333MHz , or 366Mhz only for Celeron.
∗
Set SW1 to open when you use a FSB 66MHz but want to over clock the FSB clock to
100MHz via the BIOS setting.
DIMM 1 DIMM 2
st
1
SDRAM
8/16/32/64/128/256 Mbytes
Power up FSB Clock
66MHz
100MHz
8
DIMM 3
3
nd
2 3
nd
2 3
AGP Clock
AGP Clock
÷
= FSB Clock
AGP Clock
÷
= FSB Clock
rd
rd
rd
1
1.5