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K6-III - AMD
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AMD K6-III
k6-iii logo.svg
K6-III marking logo
Developer AMD
Manufacturer AMD
Type Microprocessors
Introduction October 16, 1998 (announced)
February 22, 1999 (launch)
Architecture IA-32 with MMX and 3DNow+
ISA IA-32
µarch K6-III
Word size 32
32 bit
4 octets
8 nibbles
Process 180 nm
0.18 μm
1.8e-4 mm
, 250 nm
0.25 μm
2.5e-4 mm
Technology CMOS
Clock 333 MHz-450 MHz
Package CPGA-321
Socket Socket 7, Super Socket 7
Succession
K6-2 Athlon
Duron
K6-III+
K6-2+

K6-III was a family of 32-bit x86 microprocessors introduced by AMD in February of 1999 as a successor to the K6-2 family. K6-III was an attempt by AMD to stretch the life of the original K6 (a NexGen design) for a bit longer while they worked on K7 (Athlon).

Overview[edit]

AMD's K7 was well into development in 1998 when they announced a partnership with Motorola (now Freescale) with the goal of improving their manufacturing problems in an attempt to take on Intel. Athlon was to be released in mid-1999. The K6-III served as a temporary solution, introducing a number of small modification to the microarchitecture which resulted in a performance increase. The significant increase in performance is a result of a new large on-die L2$. Previously, systems incorporated an L2$ on the motherboard which ranged from 512 KB to 2MB. This changed with K6-III which added 256 KB of level 2 cache on-die. AMD branded this setup "TriLevel Cache", moving the on-motherboard cache to level 3.

As with K6-2, K6-III offers 3DNow!, MMX, and 3DNow+ which contained a number of new DSP instructions. K6-III, however, did not incorporated any new Intel MMX instructions. Like its predecessors, K6-III further extended the life of the Super 7 socket.

K6-III lived for only a few months. By June of 1999, AMD moved on to Athlon by which point K6-III lost any competitive advantage. In late 1999, Intel suffered major manufacturing issues, creating massive shortages of Pentium III processors. This created significant demand for Athlon models forcing AMD to discontinue K6-III to allocate more resources to Athlon to cope with the demand.

Architecture[edit]

Main article: K6-III Microarchitecture
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Die Shot[edit]

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Identification[edit]

Identification
AMD-K6-III/350ACK 
AMD-K6-III/433AFX 
       TCASE Range
Q0 °C – 60 °C
X0 °C – 65 °C
R0 °C – 70 °C
K0 °C – 80 °C
Z0 °C – 85 °C
      Core Voltage
U1.5 V ± 0.1 V C2.0 V ± 0.1 V
T1.6 V ± 0.1 V D2.1 V ± 0.1 V
P1.7 V ± 0.1 V F2.2 V ± 0.1 V
N1.8 V ± 0.1 V G2.3 V ± 0.1 V
M1.9 V ± 0.1 V H2.4 V ± 0.1 V

I/O Voltage
Always 3.3675 ± 7%
     Package Designation
ACPGA-321
BCBGA-360
IOBGA-349
    Frequency (MHz)
   
  Type
K6-IIIK6-III Processor
K6-III+K6-III+ Processor
K6-IIIE+K6-III+ Embedded Processor
K6-2+K6-2+ Processor (K6-III based)
 

Members[edit]

Three different types of K6-III models were sold: Desktop PCs, Mobile, and Embedded systems.

K6-III Desktop Models[edit]

Sharptooth Core[edit]

,,,,
Desktop K6-III Processors
ModelLaunchedProcessFreqMult.BusMax MemVCOREPackageMin TcaseMax Tcase
AMD-K6-III/333AFR13 May 1999250 nm
0.25 μm
2.5e-4 mm
333.66 MHz
0.334 GHz
333,660 kHz
3.595.33 MHz
0.0953 GHz
95,330 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.2 V
22 dV
220 cV
2,200 mV
0 °C
273.15 K
32 °F
491.67 °R
70 °C
343.15 K
158 °F
617.67 °R
AMD-K6-III/400AFR26 February 1999250 nm
0.25 μm
2.5e-4 mm
399.99 MHz
0.4 GHz
399,990 kHz
499.99 MHz
0.1 GHz
99,990 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.2 V
22 dV
220 cV
2,200 mV
0 °C
273.15 K
32 °F
491.67 °R
70 °C
343.15 K
158 °F
617.67 °R
AMD-K6-III/400AHX26 February 1999250 nm
0.25 μm
2.5e-4 mm
399.99 MHz
0.4 GHz
399,990 kHz
499.99 MHz
0.1 GHz
99,990 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.4 V
24 dV
240 cV
2,400 mV
0 °C
273.15 K
32 °F
491.67 °R
65 °C
338.15 K
149 °F
608.67 °R
AMD-K6-III/450AFX13 May 1999250 nm
0.25 μm
2.5e-4 mm
449.99 MHz
0.45 GHz
449,990 kHz
4.599.99 MHz
0.1 GHz
99,990 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.2 V
22 dV
220 cV
2,200 mV
0 °C
273.15 K
32 °F
491.67 °R
65 °C
338.15 K
149 °F
608.67 °R
AMD-K6-III/450AHX13 May 1999250 nm
0.25 μm
2.5e-4 mm
449.99 MHz
0.45 GHz
449,990 kHz
4.599.99 MHz
0.1 GHz
99,990 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.4 V
24 dV
240 cV
2,400 mV
0 °C
273.15 K
32 °F
491.67 °R
65 °C
338.15 K
149 °F
608.67 °R
Count: 5

K6-III Mobile P Models[edit]

Sharptooth Core[edit]

,,,,,,
Mobile P K6-III Processors
ModelLaunchedProcessFreqMult.BusMax MemVCOREPackageMin TcaseMax Tcase
AMD-K6-III/333AFK31 May 1999250 nm
0.25 μm
2.5e-4 mm
333.66 MHz
0.334 GHz
333,660 kHz
3.595.33 MHz
0.0953 GHz
95,330 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.2 V
22 dV
220 cV
2,200 mV
0 °C
273.15 K
32 °F
491.67 °R
80 °C
353.15 K
176 °F
635.67 °R
AMD-K6-III/350AFK31 May 1999250 nm
0.25 μm
2.5e-4 mm
349.99 MHz
0.35 GHz
349,990 kHz
3.599.99 MHz
0.1 GHz
99,990 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.2 V
22 dV
220 cV
2,200 mV
0 °C
273.15 K
32 °F
491.67 °R
80 °C
353.15 K
176 °F
635.67 °R
AMD-K6-III/366AFK31 May 1999250 nm
0.25 μm
2.5e-4 mm
366.66 MHz
0.367 GHz
366,660 kHz
5.566.66 MHz
0.0667 GHz
66,660 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.2 V
22 dV
220 cV
2,200 mV
0 °C
273.15 K
32 °F
491.67 °R
80 °C
353.15 K
176 °F
635.67 °R
AMD-K6-III/380AFK31 May 1999250 nm
0.25 μm
2.5e-4 mm
380 MHz
0.38 GHz
380,000 kHz
3.595 MHz
0.095 GHz
95,000 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2.2 V
22 dV
220 cV
2,200 mV
0 °C
273.15 K
32 °F
491.67 °R
80 °C
353.15 K
176 °F
635.67 °R
AMD-K6-III/400ACK20 September 1999250 nm
0.25 μm
2.5e-4 mm
399.999 MHz
0.4 GHz
399,999 kHz
3.599.99 MHz
0.1 GHz
99,990 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2 V
20 dV
200 cV
2,000 mV
0 °C
273.15 K
32 °F
491.67 °R
80 °C
353.15 K
176 °F
635.67 °R
AMD-K6-III/433ACK20 September 1999250 nm
0.25 μm
2.5e-4 mm
433 MHz
0.433 GHz
433,000 kHz
4.596.22 MHz
0.0962 GHz
96,220 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2 V
20 dV
200 cV
2,000 mV
0 °C
273.15 K
32 °F
491.67 °R
80 °C
353.15 K
176 °F
635.67 °R
AMD-K6-III/450ACK20 September 1999250 nm
0.25 μm
2.5e-4 mm
449.99 MHz
0.45 GHz
449,990 kHz
4.599.99 MHz
0.1 GHz
99,990 kHz
4 GiB
4,096 MiB
4,194,304 KiB
4,294,967,296 B
0.00391 TiB
2 V
20 dV
200 cV
2,000 mV
0 °C
273.15 K
32 °F
491.67 °R
80 °C
353.15 K
176 °F
635.67 °R
Count: 7

K6-III+ & K6-2+[edit]

Main articles: K6-III+ and K6-2+

In early 2000, AMD announced 2 replacement families for the K6-III. Both families were based on the K6-III microarchitecture with one having just half the L2$. Because they were manufactured in a smaller process node, they consume less voltage, dissipate less power, and could be overclocked further.

Documents[edit]

Datasheets[edit]

Facts about "K6-III - AMD"
designerAMD +
first announcedOctober 16, 1998 +
first launchedFebruary 22, 1999 +
full page nameamd/k6-iii +
instance ofmicroprocessor family +
instruction set architectureIA-32 +
main designerAMD +
manufacturerAMD +
microarchitectureK6-III +
nameAMD K6-III +
packageCPGA-321 +
process180 nm (0.18 μm, 1.8e-4 mm) + and 250 nm (0.25 μm, 2.5e-4 mm) +
socketSocket 7 + and Super Socket 7 +
technologyCMOS +
word size32 bit (4 octets, 8 nibbles) +