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PC Specifications 

Processor             Intel, Pentium III 600E, 256 KB L2 ECC Cache, 100MHz FSB
Motherboard        ABIT, BX6 R2 w/ Intel 440BX chipset
Hard drive             Maxtor, DiamandMax Plus 40, 40GB, 7200 RPM, ATA66
Memory                 128MB PC133 SDRAM
Video card            ATI, Rage Fury, 32MB, AGP2X
IDE controller       Promise Technology, Ultra66 IDE controller
Power Supply      300W


The Intel PIII 600E processor operates with a 100MHz front side bus (FSB) and a 6 times multiplier which clocks internally at 600MHz.  The internal 600MHz clock is also applied directly to the 256kB of L2 cache.  The Intel PIII 600E comes in an FC-PGA370 package.  All these specifications are shown in the following screen capture of WCPUID.  WCPUID is freeware that can be found readily on the internet.  

WCPUID Showing CPU Specifications  


The ABIT BX6 R2 is designed for use with Intel PIII 450 ~ 700 MHz and PII 350 ~ 450 MHz processors running on a 100 MHz FSB.  The motherboard is equipped with a WinBond W83782D IC for the monitoring of fan speed, voltages, and system temperatures.  The W83782D is capable of monitoring three separate temperatures.  The PIII 600E has an internal temperature diode, which is polled by the WinBond chip. The second temperature is from taken from a thermistor located on the motherboard.  The third temperature input is connected to a probe, which the user can place.  The probe, in this instance, is used to monitor the 440BX chipset temperature.

A freeware program called Motherboard Monitor is used to display the temperatures, fan speeds and power supply voltages.  The software also alarms on high and low temperature, voltage and fan speed.  Figure 2 shows the Motherboard Monitor display.

 Motherboard Monitor

The ABIT motherboard allows for control of the clock generator IC through ABITís SoftMenuII feature in the BIOS. The clock generator IC clocks the FSB.  The FSB is connected to the CPU and to the 440BX chipset.  Typically the FSB speed, on OEM motherboards, must be changed through the use of hardware jumpers.  The FSB settings allowed are 66, 75, 83, 100, 112, 117, 124, 129, 133, 138, 143, 148 and 153 MHz.

The FSB speed can also be changed by communicating directly to the clock generator IC through a piece of software called SoftFSB.  Shown below are two screen captures of the SoftFSB interface.  One shows the FSB at 100 MHz and the other shows the FSB changed to 138 MHz.


SoftFSB Showing Two Different FSB Speeds


The SOFTMENU II interface also allows for the adjustment of the CPU core voltage, which is shown below in Figure 2.  The core voltage can be adjusted from 1.30V to 1.85V in 0.05V increments.  The core voltage adjustment would normally be accomplished through jumper setting on OEM motherboards. 


SOFTMENU II Bios, CPU Voltage Adjustment


University of Victoria    Faculty of Engineering    Dept. of Electrical Engineering
©2001 Liquid Overdrive
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Last updated: April 6, 2001.