User manual

Onboard Components
11
Onboard Components
Processor
The D2- CPU Basic supports Pentium III processors as well as Celeron
processors in FC-PGA package. The released types are:
Processor
type
Processor
speed
Host Bus
frequency
Cache size Memory Bus
frequency
Celeron 566 MHz 66MHz 128 KB 100 MHz
Celeron 1.2 GHz 100 256 100 MHz
Pentium III 600 MHz 100 MHz 256 KB 100 MHz
Pentium III 866 133 256 133 MHz
Pentium III 1.26 133 512 133 MHz
The frequency selection is automatically selected . Also the core voltage – which
depends on processor type and revision version – are defined automatically by
the processors VID pins.
Attention:
 The passive heatsink has to be installed correctly.
 The heatsink paste is absolutely necessary.
 The processor fan – if installed – has to be controlled whether it works
properly, thus avoiding malfunctions of the CPU!.
System Memory
On the D2-CPU Basic two DIMM sockets are provided for connecting memory
modules in SDRAM technology up to 512 MByte ( 2x 256 MB). DIMMs with
different sizes can be used.
One or both DIMM modules can be assembled. The DIMMs are unbuffered 3.3V
memory modules.