GL815E Endura Motherboard Product Manual
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2 Motherboard Description
2.1 Processor
The GL8"5E motherboard supports Intel Celeron and Pentium III processors in a PGA370 package
(FC-PGA). The table below lists the supported processors. An on-board voltage regulator generates
the voltage for the CPU. Both the processor voltage and the operating frequency are automatically
adjusted by the motherboard to suit the installed processor.
Processor Type Processor Speed CPU bus speed Cache size Package
Intel Celeron 566 MHz 66 MHz "28kB FC-PGA
Intel Celeron 733 MHz 66 MHz "28kB FC-PGA
Intel Celeron 850 MHz "00 MHz "28kB FC-PGA
Intel Pentium III 600 MHz "00 MHz 256kB FC-PGA
Intel Pentium III 700 MHz "00 MHz 256kB FC-PGA
Intel Pentium III 733 MHz "33 MHz 256kB FC-PGA
Intel Pentium III 850 MHz "00 MHz 256kB FC-PGA
Intel Pentium III 866 MHz "33 MHz 256kB FC-PGA
Intel Pentium III ".0 GHz "33 MHz 256kB FC-PGA
2.2 System Memory
The GL8"5E motherboard has two DIMM sockets to accept PC"00 or PC"33 modules. The product
does not accept PC66 modules. The sockets may be populated in any order and each can accept
either single or double-sided modules. The minimum total memory size is "6MB and the maximum
is 5"2MB. The BIOS automatically configures the motherboard for the correct size, speed and type.
For best performance, use PC"33 modules with a "33MHz bus processor. When using a "00MHz
bus processor, the module will always operate at "00MHz regardless of type. See the Manuals,
Drivers & BIOS section on the RadiSys web site at www.radisys.com for a list of memory modules
that have been tested with this product.
When using the on-board video controller, the frame buffer is held within system memory
and thus less memory is available to the operating system.
Each memory module should meet the following requirements
• Compliance with the Intel PC"00 or PC"33 specification
• Inclusion of a serial presence detect (SPD) ROM
• The module type is 3.3V "68-pin unbuffered synchronous DRAM (SDRAM)
• Based on "6Mb, 64Mb, "28Mb or 256Mb devices
• Capacity of between "6MB and 5"2MB
• 64 bits wide. ECC or parity is not supported
