Intel Pentium III

Technical Specification

PIII Sticker

PIII Mobile
Introduction date:

Addressable memory:
Address Bus:
Data Bus:
Number of Transistors:
Circuit Size:
L1 Cache:
L2 Cache:


February 26. 1999
October 25. 1999
450 MHz  - 1400 MHz
64 Bit microprocessor
64 Giga Byte
36 Bit
64 Bit
9.500.000  (Katmai), 28.100.000 (Coppermine, Tualatin)
0,25um  Coppermine: 0,18 um  Tualatin: 0,13 um
16+16 Kbytes
256 - 512 Kbytes

The Pentium III is an x86 architecture microprocessor by Intel, introduced on February 26, 1999 (Katmai). The most notable difference to the Pentium II is the addition of SSE instructions.
The second Pentium III version (Coppermine)  had an integrated full-speed 256 KB L2 cache with lower latency, which improved performance over Katamai.
It was built on a 0.18 um process. Pentium III Coppermines running at 500, 533, 550, 600, 650, 667, 700, and 733 MHz were first released on October 25, 1999. From December 1999 to May 2000, Intel released Pentium IIIS running at speeds of 750, 800, 850, 866, 900, 933 and 1000 MHz (1GHz).
The third Pentium III-version (Tualatin) was really just a trial for Intel's new 0.13 um process.
Pentium III Tualatins were released during 2001 until early 2002 at speeds of 1.0, 1.13, 1.2, 1.26, 1.33 and 1.4 GHz.

Pentium III Core: Katmai  Slot 1

450/512/100/2.0 V S1 450/512/100/2.0 V S1 450/512/100/2.0 V S1
Malaysia, SL364 Costa Rica, SL35D Malaysia, SL35D
450/512/100/2.0 V S1 450/512/100/2.0 V S1 450/512/100/2.0 V S1
Philippines, SL35D Malaysia, SL37C Philippines, SL37C
450/512/100/2.0 V S1 500/512/100/2.0 V S1 500/512/100/2.0 V S1
Malaysia, SL3CC Costa Rica, SL35E Philippines, SL35E
500/512/100/2.0 V S1 500/512/100/2.0 V S1 500/512/100/2.0 V S1
Philippines, SL37D Malaysia, SL35E Malaysia, SL3CD
533E/256/133/1.65V S1 550/512/100/2.0 V S1 550/512/100/2.0 V S1
Costa Rica, SL3N6 Malaysia, SL3F7 Costa Rica, SL3F7
550/512/100/2.0 V S1 600E/256/100/1.65V S1 600E/256/100/1.65V S1  
Philippines, SL3FJ Philippines,  SL3NA Costa Rica, SL43E
600/512/100/2.05V S1    
Malaysia, SL3JM    

Pentium III Core: Coppermine Slot 1 / FCPGA 370

533EB/256/133/1.65V S1 650/256/100/1.65V S1 650/256/100/1.65V S1
Philippines, SL3N6 Philippines, SL3NR Costa Rica, SL3XK
650/256/100/1.65V S1 700/256/100/1.65V S1 733/256/133/1.65V S1
Malaysia, SL3XK Costa Rica, SL3XM Philippines, SL3XN
800/256/100/1.7 V S1 1000/256/100/1.7 V S1  
Costa Rica, SL4BY Philippines, SL4BS  
RB80526PY500256 RB80526PZ533256 RB80526PZ600256
Malaysia, SL3R2 Malaysia, SL3VF Malaysia, SL3VG
650/256/100/1.65V 667/256/133/1.475 V RB80526PZ667256
Malaysia, SL3XV Malaysia Malaysia, SL3VK
667/256/133/1.65V 667/256/133/1.65V 667/256/133/1.7V
Malaysia, SL3XW Philippines, SL3XW Malaysia, SL4CJ
667/256/133/1.7V 700/256/100/1.65V 700/256/100/1.65V
Philippines, SL4CJ Costa Rica, SL3XX Philippines, SL45Y
733/256/133/1.65V 733/256/133/1.65V 733/256/133/1.65V
Costa Rica, SL3XY Malaysia, SL3XY Philippines, SL3XY
750/256/100/1.7 V 800/256/100/1.7 V 800EB/256/133/1.65 V
Philippines, SL4CF Philippines, SL4CE Costa Rica, SL3Y2
800/256/133/1.7 V  800/256/133/1.7 V 800/256/133/1.7 V
Malaysia, SL4CB Costa Rica, SL4CD Malaysia, SL4CD
800/256/133/1.7 V 800EB/256/133/1.7 V 866/256/133/1.65 V
Philippines, SL4CD Philippines, SL4MB Costa Rica, SL43J
866/256/133/1.65 V 866/256/133/1.65 V 866/256/133/1.65 V
Malaysia, SL43J Philippines, SL43J Malaysia, SL49H
866/256/133/1.7 V 866/256/133/1.7 V 900/256/100/1.70V
Philippines, SL4CB Malaysia, SL4MD Philippines, SL4SD
933/256/133/1.75V 933/256/133/1.7V 933/256/133/1.75V
Philippines, SL4C9 Malaysia, SL4ME Costa Rica, SL52Q
1000/256/133/1.7V 1000/256/133/1.75V 1000/256/133/1.75V
Malaysia, SL4MF Costa Rica, SL52R Malaysia, SL52R
1000/256/133/1.75V 1000/256/133/1.75V  
Philippines, SL52R Malaysia, SL5DV  

Pentium III Core: Tualatin FCPGA 370

1200/256/133/1.475 V    
Philippines, SL5PM    

Pentium III : Mobile  ,Micro-FCPGA, Socket 478

KP450/256 KP600/256 KC850/256
RH80530 933/512    
P III 450MHz, MMC2 package    
Engineering Sample    

More Info and Pictures Intel Pentium III

Pentium III Core

PGA 370 Pinout