Question about Vcore Voltage with 2400XP

Question

Hi i have been to amd site and looked up what VCore Voltage i should run my processor at and it says 1.65v and the FSB at 133MHz
The think is the default in the bios is 1.800 and the computer works fine when bios set at "AUTO" for this.
I changed it to 1.65v and computer will get to just before the windows logo comes up and restarts.
If i put the FSB at 100Mhz the computer boots up fine.
Any Ideas on why i cannot run the computer at full speed with the recommended VCore voltage of 1.65v
Thanks
Frank

Answer 1

her's the cpu-z report
CPU(s)   
Number of CPUs   1
Name   AMD Athlon XP
Code Name   Thoroughbred
Specification   AMD Athlon(tm) XP 2400+
Family / Model / Stepping   6 8 1
Extended Family / Model   7 8
Package   Socket A
Core Stepping   B0
Technology   0.13 µ
Supported Instructions Sets   MMX, Extended MMX, 3DNow!, Extended 3DNow!, SSE
CPU Clock Speed   2004.6 MHz
Clock multiplier   x 15.0
Front Side Bus Frequency   133.6 MHz
Bus Speed   267.3 MHz
L1 Data Cache   64 KBytes, 2-way set associative, 64 Bytes line size
L1 Instruction Cache   64 KBytes, 2-way set associative, 64 Bytes line size
L2 Cache   256 KBytes, 16-way set associative, 64 Bytes line size
L2 Speed   2004.6 MHz (Full)
L2 Location   On Chip
L2 Data Prefetch Logic   yes
L2 Bus Width   64 bits
Mainboard and chipset   
Motherboard manufacturer   MSI
Motherboard model   MS-6590, 2.0
BIOS vendor   American Megatrends Inc.
BIOS revision   Version 07.00T
BIOS release date   04/02/01
Chipset   VIA KT600 rev. 80
Southbridge   VIA VT8237 rev. 00
Sensor chip   Winbond W83697HF
Graphic Interface   AGP
AGP Status   enabled, rev. 3.5
AGP Data Transfer Rate   8x
AGP Max Rate   8x
AGP Side Band Addressing   supported, enabled
AGP Aperture Size   16 MBytes
Memory   
DRAM Type   DDR-SDRAM
DRAM Size   1024 MBytes
DRAM Frequency   133.6 MHz
FSB:DRAM   1:1
DRAM Interleave   4-way
CAS# Latency   2.5 clocks
RAS# to CAS#   3 clocks
RAS# Precharge   3 clocks
Cycle Time (TRAS)   6 clocks
# of memory modules   2
Module 0   Nanya Technology DDR-SDRAM PC3200 - 512 MBytes
Module 1   Kingston DDR-SDRAM PC2100 - 512 MBytes
Software   
Windows version   Microsoft Windows XP Professional Service Pack 2 (Build 2600)
DirectX version   9.0c