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1993: Cyrix
  week 01, 1993: Cyrix FasMath CX-83D87-25-GP-KN
  week 03, 1993: Cyrix Cx486DLC-33GP OEM
  week 04, 1993: Cyrix FasMath CX-83S87-33-JP
  week 13, 1993: Cyrix FasMath CX-83D87-33-GP-KN
  week 18, 1993: Cyrix Cx486S-40 w/ Cooler
  week 20, 1993: Cyrix Cx486DLC-33GP OEM
  week 31, 1993: Cyrix Cx487S-33QP
  week 39, 1993: Cyrix Cx486SLC/e-V25MP
  week 40, 1993: Cyrix Cx486SLC/e-33MP
  week 40, 1993: Cyrix Cx487S-40QP
  week 42, 1993: Cyrix Cx486S-33GP
  week 45, 1993: Cyrix Cx486S-40GP
  week 48, 1993: Cyrix Cx486DX-40 w/ Cooler, newer Logo
» Cyrix overview
» all chips made in 1993
 
Cyrix FasMath CX-83D87-25-GP-KN
Cyrix FasMath CX-83D87-25-GP-KN Top Side
FasMath
CX-83D87-25-GP-KN
B30108
(C)(M) 1989 Cyrix USA
Cyrix FasMath CX-83D87-25-GP-KN Back Side
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Core Frequency:25 MHz
Board Frequency:25 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Manufactured:week 01/1993
Package Type:Ceramic
PGA-68
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Cyrix Cx486DLC-33GP OEM
Cyrix Cx486DLC-33GP OEM Top Side
Cx486DLC-33GP
FOR OEM USE ONLY
AB6303E
Cyrix Cx486DLC-33GP OEM Back Side
(C)(M)1992 Cyrix USA
JAPAN
A special OEM version of the above chip with golden Cyrix and Cx486DLC logo.
 
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:600,000
Voltage:5 V
Introduced:06/1992
Manufactured:week 03/1993
Made in:Japan
L1 Cache:1 KB
Package Type:Ceramic
PGA-132
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Cyrix FasMath CX-83S87-33-JP
Cyrix FasMath CX-83S87-33-JP Top Side
FasMath
CX-83S87-33-JP
AAE304A
Cyrix FasMath CX-83S87-33-JP Back Side
(C)(M)1989 Cyrix USA
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Manufactured:week 04/1993
Made in:Korea
Package Type:Plastic
PLCC-68
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Cyrix FasMath CX-83D87-33-GP-KN
Cyrix FasMath CX-83D87-33-GP-KN Top Side
FasMath
CX-83D87-33-GP-KN
C3139F
(C)(M) 1989 Cyrix USA
Cyrix FasMath CX-83D87-33-GP-KN Back Side
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Manufactured:week 13/1993
Package Type:Ceramic
PGA-68
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Cyrix Cx486S-40 w/ Cooler
Cyrix Cx486S-40 w/ Cooler Top Side
Cx486
S 40
FASCACHE
Cyrix Cx486S-40 w/ Cooler Back Side
(c)(m)1993 Cyrix USA
JAPAN
AB1318B
Donated by Christian Lederer. Thanks a lot!  
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Core Frequency:40 MHz
Board Frequency:40 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Voltage:5 V
Introduced:05/1993
Manufactured:week 18/1993
Made in:Japan
L1 Cache:2 KB
CPU Code:Cx486 S
M5
Package Type:Ceramic
PGA-168
Cooler
Socket: 2/3
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Cyrix Cx486DLC-33GP OEM
Cyrix Cx486DLC-33GP OEM Top Side
Cx486DLC-33GP
FOR OEM USE ONLY
BB6320B
Cyrix Cx486DLC-33GP OEM Back Side
(c)(M) 1992 Cyrix USA
JAPAN
A special OEM version of the above chip with golden Cyrix logo.
 
add comment
Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:600,000
Voltage:5 V
Introduced:06/1992
Manufactured:week 20/1993
L1 Cache:1 KB
Package Type:Ceramic
PGA-132
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Cyrix Cx487S-33QP
Cyrix Cx487S-33QP Top Side
Cx487S
Cx487S-33QP
AEF331A
Cyrix Cx487S-33QP Back Side
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Manufactured:week 31/1993
Package Type:Plastic
PQFP-80 inside PGA-168
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Cyrix Cx486SLC/e-V25MP
Cyrix Cx486SLC/e-V25MP Top Side
Cx486SLC/e-V25MP
DF7339E
Cyrix Cx486SLC/e-V25MP Back Side
(C)(M)1992 Cyrix USA
This CPU has a 486 instruction set and a 386 pinout. SLC/e stands for low power (SMM: System Management Mode) version of a Cx486SLC.
 
Comment by Paul Hoffman (paulhoffman18[at]gmail.com):
the Cx486SLC/e was packaged in a unique package named `MQUAD` developed and produced by Olin Interconnect Technologies. The package had a black-anodized lid and base that was attached to the leadframe with an adhesive seal. The characteristic sign of the package was the circular pattern in the center of the lid (as in the picture). This was actually a small anodized aluminum disk that was used to seal a vent hole in the package lid (venting was required during the cure of the adhesive seal). The MQUAD package offered superior thermal performance due to its aluminum body - but was relatively short-lived as it was a non-standard package technology.
 
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Core Frequency:25 MHz
Board Frequency:25 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:600,000
Voltage:3.3 V
Introduced:12/1992
Manufactured:week 39/1993
L1 Cache:1 KB
Package Type:MQUAD
QFP-100
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Cyrix Cx486SLC/e-33MP
Cyrix Cx486SLC/e-33MP Top Side
Cx486SLC/e-33MP
FF5403C
Cyrix Cx486SLC/e-33MP Back Side
(c)(m)1992 Cyrix USA
Donated by SOFTWERK. Thanks a lot!  
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:600,000
Voltage:3.3 V
Introduced:12/1992
Manufactured:week 40/1993
L1 Cache:1 KB
Package Type:MQUAD
QFP-100
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Cyrix Cx487S-40QP
Cyrix Cx487S-40QP Top Side
Cx487S
Cx487S-40QP
AEH340A
Cyrix Cx487S-40QP Back Side
Donated by Christian Lederer. Thanks a lot!  
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Core Frequency:40 MHz
Board Frequency:40 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Manufactured:week 40/1993
Package Type:Plastic
PQFP-80 inside PGA-168
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Cyrix Cx486S-33GP
Cyrix Cx486S-33GP Top Side
Cx486
S 33
FASCACHE
Cx486S-33GP
Cyrix Cx486S-33GP Back Side
(c)(m)1993 Cyrix USA
JAPAN
DB2342J
Donated by Christian Lederer. Thanks a lot!  
Comment by VMUNIX (andres_leitner[at]yahoo.com.ar):
I'm wondering what "fastcache" stands for ? and why is it only 2Kb instead of 8Kb
 
The Cyrix 486S is a i486SX compatible processor with 2kB write back cache. All the other cpus on the market at this time had no write back cache. The 486S also had a special signal (write burst), the usage of this depends on the motherboard design. These both things brought cyrix a speed up of around 6% (to a i486SX).
 
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Voltage:5 V
Introduced:05/1993
Manufactured:week 42/1993
Made in:Japan
L1 Cache:2 KB
CPU Code:Cx486 S
M5
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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Cyrix Cx486S-40GP
Cyrix Cx486S-40GP Top Side
Cx486
S 40
FASCACHE
Cx486S-40GP
Cyrix Cx486S-40GP Back Side
(c)(m)1993 Cyrix USA
JAPAN
DB2343K
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Core Frequency:40 MHz
Board Frequency:40 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Voltage:5 V
Introduced:05/1993
Manufactured:week 45/1993
Made in:Japan
L1 Cache:2 KB
CPU Code:Cx486 S
M5
Package Type:Ceramic
PGA-168
Socket: 2/3
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Cyrix Cx486DX-40 w/ Cooler, newer Logo
Cyrix Cx486DX-40 w/ Cooler, newer Logo Top Side
Cx486
DX 40
Cyrix Cx486DX-40 w/ Cooler, newer Logo Back Side
(C) (M) 1993 Cyrix USA
ALB348A
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Core Frequency:40 MHz
Board Frequency:40 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Voltage:5 V
Introduced:09/1993
Manufactured:week 48/1993
L1 Cache:8 KB
CPU Code:Cx486 DX
M6
Package Type:Ceramic
PGA-168
Cooler
Socket: 2/3
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