PCchips M935 Series, User Manual

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2: Mainboard Installation
5. Swing the locking lever down and hook it under the catch on
the side of the socket. This secures the CPU in the socket.
6. All processors should be installed with a combination heatsink/
cooling fan, connect the cable from the fan to the CPU fan
power connector JP1.
Installing Memory Modules
This mainboard accommodates 168-pin 3.3V/184-pin 2.5V
unbuffered SDRAM memory modules. The memory chips must be
standard or registered SDRAM (Synchronous Dynamic Random
Access Memory).
The CPU supports 100MHz system bus. The SDRAM DIMMs
and DDRs can synchronously work with 100 MHz or operates over
a 266 MHz system bus.
You must install at least one memory module in order to work out
the mainboard,
either SDRAM or DDR SDRAM, but you can
not use them simultaneously.
SDRAM provides 800 MB/s or 1 GB/s data transfer rate
corresponding with the bus 100 MHz or 133 MHz. It doubles the
rate to 1.6 GB/s and 2.1 GB/s by transferring data on both the
rising and falling edges of the clock. DDR SDRAM uses additional
power and ground lines and requires 184-pin 2.5V unbuffered
DIMM module rather than the 168-pin 3.3V unbuffered DIMMs
used by SDRAM.
13
DIMM1
DIMM2
DIMM3
DIMM4