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AMD K6-III 450 - AMD-K6-III/450AHX

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AMD K6-III 450 MHz specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD K6-III
CPU part numberAMD-K6-III/450AHX is an OEM/tray microprocessor
Frequency  ? 450 MHz
Bus speed  ? 100 MHz
Clock multiplier  ? 4.5
Package321-pin ceramic staggered PGA
1.95" x 1.95" (4.95 cm x 4.95 cm)
SocketSuper 7
Introduction dateMay 13, 1999
Architecture / Microarchitecture
Processor core  ? Sharptooth
Manufacturing process0.25 micron
21.3 million transistors
Data width32 bit
Floating Point UnitIntegrated
Level 1 cache size  ? 32 KB instruction cache with additional 20 KB pre-decode cache
32 KB writeback data cache
Level 2 cache size  ? 256 KB full speed
Physical memory4 GB
  • MMX instructions
  • 3DNow! technology
Low power features
  • Halt state
  • Stop Grant state  ? 
  • Stop Grant Inquire state
  • Stop Clock state
Electrical / Thermal parameters
V core  ? 2.4V ± 0.1V
Min/Recommended/Max V I/O or secondary3.135V / 3.3V / 3.6V
Minimum/Maximum operating temperature  ? 0°C - 65°C
Minimum/Typical/Maximum power dissipation4.8 Watt (Stop Clock mode) / 17.7 Watt / 29.5 Watt

Detailed side-by-side comparison

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K6-III 450 MHz Overclocking

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CPU ID information for the K6-III 450 MHz

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NOTE: The CPU ID information below was taken from one CPU and may include features that are not present in all different steppings of the AMD K6-III AMD-K6-III/450AHX CPU.

CPU Family:K6-III
Model Number:
Frequency:451 MHz
Part number:
Stepping Code:
Submitted by:dmb
General information
Processor name (BIOS):AMD-K6(tm) 3D+ Processor
Processor type:Original OEM Processor
CPUID signature:591
Family: 5 (05h)
Model: 9 (09h)
Stepping: 1 (01h)

Cache: L1 data L1 instruction L2
Size: 32 KB 32 KB 256 KB
Associativity: 2-way set
2-way set
4-way set
Line size: 32 bytes 32 bytes 32 bytes
Lines per tag: 2 2 2
Instruction set extensionsAdditional instructions
Major featuresOther features
On-chip Floating Point Unit Debugging extensions
  Machine check exception
  Model-specific registers
  Page global extension
  Page-size extensions (4MB pages)
  Time stamp counter
  Virtual 8086-mode enhancements

CPUs, related to AMD K6-III 450 MHz (AMD-K6-III/450AHX)

Model Frequency L1
AMD K6-III family, Super socket 7
   K6-III 450 MHz (AMD-K6-III/450AFX)450 MHz64 KB256 KB>
   K6-III 450 MHz (AMD-K6-III/450AHX)450 MHz64 KB256 KB 
AMD K6-III family, K6 micro-architecture, Other sockets
   K6-III 333 MHz (AMD-K6-III/333AFR)333 MHz64 KB256 KB>
   K6-III 400 MHz (AMD-K6-III/400AFR)400 MHz64 KB256 KB>
   K6-III 400 MHz (AMD-K6-III/400AHX)400 MHz64 KB256 KB>
Other families, K6 micro-architecture, Super socket 7
   K6-III+ 450 MHz (AMD-K6-III+/450ACZ)450 MHz64 KB256 KBESS>
   K6-2 475 MHz (AMD-K6-2/475AFX)475 MHz64 KB >
   K6-2 475 MHz (AMD-K6-2/475AHX)475 MHz64 KB >
   K6-III+ 475 MHz (AMD-K6-III+/475ACZ)475 MHz64 KB256 KBESS>
   K6-2 500 MHz (AMD-K6-2/500AFX)500 MHz64 KB >
   K6-2 500 MHz (AMD-K6-2/500AHX)500 MHz64 KB >
   K6-III+ 500 MHz (AMD-K6-III+/500ACZ)500 MHz64 KB256 KBESS>
   K6-2 533 MHz (AMD-K6-2/533AFX)533 MHz64 KB >
   K6-2 550 MHz (AMD-K6-2/550AFX)550 MHz64 KB >
   K6-2 550 MHz (AMD-K6-2/550AGR)550 MHz64 KB >
 • Highlighted numbers and features indicate whether specific processor performs better or worse than the K6-III 450 MHz (AMD-K6-III/450AHX)
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 • List of related CPUs is not complete.
 • Features abbreviations:
ESS - PowerNow! / Enhanced SpeedStep

Pictures (4)

2008-10-27 08:56:49
Posted by: Neon

2011-06-09 20:42:23
Posted by: dmb

I removed the hair before attaching the heatsink :-)
2014-02-25 14:48:47
Posted by: bougui

2014-02-25 14:49:10
Posted by: bougui

Comments (1)

You're welcome to post suggestions, corrections, your own personal AMD K6-III 450 MHz review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.

nVidia compatibility

2011-06-09 20:47:14
Posted by: dmb

If you use this CPU on an AGP 1.0 board (likely) with an
nVidia video card such as a Geforce2 MX then the last
known working driver for win98se and perhaps XP is

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