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AMD-K6-III/400AHX
Week 24, 1999
General Info
Designer	AMD
Manufacturer	AMD
Model Number	AMD-K6-III/400AHX
Part Number	AMD-K6-III/400AHX
Market	Desktop
Introduction	February 26, 1999 (announced) February 26, 1999 (launched)
Shop	Amazon
General Specs
Family	K6-III
Series	K6-III Desktop
Frequency	399.99 MHz
Bus type	FSB
Bus speed	99.99 MHz
Bus rate	99.99 MT/s
Clock multiplier	4
CPUID	590
Microarchitecture
Microarchitecture	K6-III
Platform	Super 7
Core Name	Sharptooth
Core Family	5
Core Model	9
Core Stepping	0
Process	0.25 µm
Transistors	21,300,000
Technology	CMOS
Die	118 mm²
Word Size	32 bit
Cores	1
Threads	1
Max Memory	4 GiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
Power dissipation	26.80 W
Vcore	2.4 V ± 0.1 V
VI/O	3.3675 V ± 7%
Tcase	0 °C – 65 °C
Tstorage	-65 °C – 150 °C

AMD-K6-III/400AHX is a 32-bit x86 desktop microprocessor designed by AMD and introduced in early 1999. This MPU which was manufactured on a 0.25 µm process, based on K6-III microarchitecture, operated at 400 MHz with a bus of 100 MHz and a multiplier of 4. While default to a 100 MHz bus (Super 7), this model can also operate at the old Socket 7 bus speed of 66 MHz (multiplier of 6). This processors had a maximum power dissipation rating of 26.8 W.

Cache

Main article: K6-III § Cache

L3$ can be 512 KiB to 2 MiB, depending on manufacturer and motherboard model. L3$ is off-chip.

Cache Info [Edit Values]
L1I$	32 KiB 32,768 B 0.0313 MiB	1x32 KiB 2-way set associative
L1D$	32 KiB 32,768 B 0.0313 MiB	1x32 KiB 2-way set associative
L2$	256 KiB 0.25 MiB 262,144 B 2.441406e-4 GiB	1x256 KiB 4-way set associative (shared)

Graphics

This SoC has no integrated graphics processing unit.

Features

[Edit/Modify Supported Features]

	Supported x86 Extensions & Processor Features
	MMX MMX Extension EMMX Extended MMX Extension 3DNow! 3DNow! Extension E3DNow! Extended 3DNow! Extension

• Auto-power down state
• Stop clock state
• Halt state