I changed the battery fas the date was going haywire, and the CPU was shown as a AMD Athlon X86 Family 6 Model 6 Stepping 2 speed 1143Hzl, so I went into the CMOS

Compared to the User Manual the following discrepencies were noted

Advanced Chipset Menu
FSB spread 7N8X deluxe User Manual Default is Disabled
Mine set at 0.5%
CPU Vcore Default set at 1.85V
Mine calculated at 1.75V Can be re-set

CPU speed still showing in Windows as 1143 MHz
Yet it is a XP1800 1.5GHz

Should I restore these default settings????

Appreciate your comments

There should be a general setting to reset Defaults.

This is always a good place to start.

Also do you know if you have your latest BIOS version?

Not sure about the BIOS

I Loaded the defaults

Advanced Chiset Features Menu reads
CPU External Frequency stayed at 100 MHz
CPU Frequency Multiplier incresed from 5.0* to 11.5*
System Performance [Optimal]
CPU interface [Optimal]
Memory Freq [By SPD]
Resulting Fequency stayed ay 133MHz - book default 166MHz
Memory Timings [Optimal]
SDRAM Active Precharge delay Book 7 mine 6
SDRAM RAS to CAS delay Book 1 mine 3
SDRAM RAS precharge delay Book 1 mine 3
SDRAM latency Book 2.5 mine 2.5
FSB Spread Spectrum Book [Disabled] mine 0.5%
AGP Spread Spectrum Book [Disabled] mine [Disabled]
CPU VCORE setting Book [AUTO] mine [AUTO]
CPU VCORE BOOK[ 1.85v] mine [1.75v]

The processor in the XP sytsem information still shows
AMD Athlon
x86 family 6 model 6 stepping 2
Speed 1143 MHz

Would you alter
a.the CPU external Frequency
b. the Frequency multiplier (although I have a feeling that 11.5 is correct)
c. CPU VCORE voltage from 1.75v to 1.85v

Appreciate your views

What does CPU_Z report?

CPU z results

AMD Athlon MP
Code Name Palomino
Voltage 1.776v

Family 6 Model 6 Stepping 2
Ext family 7 EXt Model 6 REvison A5

Clocks
Core Speed 1143 MHZ L1 data 64 bytes
Multiplier 11.5 L1 code 64 bytes
Bus Speed 99.5 Level 2 256 Kbytes
Rated FSB 199MHZ

Memory
Frequency 132.6
FSB: DRam 3:4
CAS latency 2.5 clocks
RAS to CAS latency 3 clocks
RAS precharge 3 clocks
cycles time 6 clocks

SBR
Module size 256 MBytes
Max bandwidth PC2100 133MHZ

Timings Table
Frequency 100MHz 133MHz
CAS latency 2.0 2.5
RAS to CAS 2 3
RAS precharge 2 3
Tras 5 6