1700+ athlon xp up to 3100+
It`s my system. Works fine 4 years.
What is your best overcloacking stable result?

That is very impressive! No heat problems?

Although my current board has options from 5% > 30% overclock only 10% works for me. If I go to 20% the board just reboots to defaults.

Anyway I have no problem with 10%. Also added liquid cooling!

Number of CPUs 2 (1 Physical)

CPU #1
APIC ID 0
Name Intel Pentium 4 640
Code name Prescott
Specification Intel(R) Pentium(R) 4 CPU 3.20GHz
Family/Model/Stepping F43
Extended Family/Model F/4
Package LGA 775 (4h)
Core Stepping N0
Technology 90nm
Instructions Sets MMX, SSE, SSE2, SSE3, EM64T
Features
Clock Speed 3520.1 MHz
Clock multiplier x16.0
Front Side Bus Frequency 220.0 MHz
Bus Speed 880.0 MHz
Stock frequency 3200 MHz
L1 Data Cache 16 KBytes, 8-way set associative, 64 Bytes line size
L1 Trace Cache 12 Kuops, 8-way set associative
L2 Cache 2048 KBytes, 8-way set associative, 64 Bytes line size
L2 Speed 3520.1 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 256 bits

CPU #2 (logical unit)
APIC ID 1
Name Intel Pentium 4 640
Code name Prescott
Specification Intel(R) Pentium(R) 4 CPU 3.20GHz
Family/Model/Stepping F43
Extended Family/Model F/4
Package LGA 775 (4h)
Core Stepping N0
Technology 90nm
Instructions Sets MMX, SSE, SSE2, SSE3, EM64T
Features
Clock Speed 3520.1 MHz
Clock multiplier x16.0
Front Side Bus Frequency 220.0 MHz
Bus Speed 880.0 MHz
Stock frequency 3200 MHz
L1 Data Cache 16 KBytes, 8-way set associative, 64 Bytes line size
L1 Trace Cache 12 Kuops, 8-way set associative
L2 Cache 2048 KBytes, 8-way set associative, 64 Bytes line size
L2 Speed 3520.1 MHz (Full)
L2 Location On Chip
L2 Data Prefetch Logic yes
L2 Bus Width 256 bits