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1990: Intel
  week 09, 1990: Intel D80C187-16
  week 16, 1990: Intel N80C188
  week 18, 1990: Intel A80387DX-20 w/ sSpec
  week 20, 1990: Intel A80386DX-20 IV
  week 23, 1990: Intel N80286-10
  week 24, 1990: Intel NG80386SX-16 C STEP
  week 26, 1990: Intel A80387DX-20
  week 26, 1990: Intel N80387SX-16
  week 28, 1990: Intel A80860XR-40
  week 30, 1990: Intel A80387DX-33
  week 37, 1990: Intel C80287XL
  week 40, 1990: Intel NG80386SX-16
  week 40, 1990: Intel A80387DX-25
  week 48, 1990: Intel A80486DX-33
  week 52, 1990: Intel A80386DX-25 IV
» Intel overview
» all chips made in 1990
 
Intel D80C187-16
Intel D80C187-16 Top Side
D80C187-16
L0090373
INTEL(m)(c)1986
Intel D80C187-16 Back Side
8908235MAA
MALAY QED 008
The 80187 is a rather late coprocessor designed to support the 80C186 embedded processor. It was introduced in 1989 and implements the complete 80387 instruction set. It is available for 12.5 and 16 MHz operation.
 
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Core Frequency:16 MHz
Board Frequency:16 MHz
Introduced:1989
Manufactured:week 09/1990
Made in:Malaysia
Package Type:Ceramic
DIP-40
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Intel N80C188
Intel N80C188 Top Side
N80C188
L0162920
(m)(c) 1978
Intel N80C188 Back Side
8006457G
AB NT14
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Core Frequency:8 MHz
Board Frequency:8 MHz
Data bus (ext.):8 Bit
Address bus:20 Bit
Introduced:1978
Manufactured:week 16/1990
Package Type:Plastic
PLCC-68
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Intel A80387DX-20 w/ sSpec
Intel A80387DX-20 w/ sSpec Top Side
A80387DX-20
SX105
L0183214
INTEL (m)(c) 1986
Intel A80387DX-20 w/ sSpec Back Side
30083700AB
MALAY
015
IS
Donated by Christian Lederer. Thanks a lot!  
An A80387DX-20 with sSpec number.
 
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Core Frequency:20 MHz
Board Frequency:20 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Introduced:1989
Manufactured:week 18/1990
Made in:Malaysia
L1 Cache:8 KB
CPU Code:i387 DX
Intel S-Spec: SX105
Package Type:Ceramic
PGA-68
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Intel A80386DX-20 IV
Intel A80386DX-20 IV Top Side
A80386DX-20 IV
SX217
L0201850
(m) (c)INTEL '85
Intel A80386DX-20 IV Back Side
90121931AE
MALAY
BZ 019
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Core Frequency:20 MHz
Board Frequency:20 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:275,000
Circuit Size:1.50
Voltage:5 V
Introduced:February 16, 1987
Manufactured:week 20/1990
Made in:Malaysia
CPU Code:i386 DX
Intel S-Spec: SX217
Package Type:Ceramic
PGA-132
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Intel N80286-10
Intel N80286-10 Top Side
N80286-10
L0232813
(m)(c) '82 '85
Intel N80286-10 Back Side
56053661
AC 0E20
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Core Frequency:10 MHz
Board Frequency:10 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:134,000
Circuit Size:1.50
Voltage:5 V
Introduced:02/1982
Manufactured:week 23/1990
Package Type:Plastic
PLCC-68
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Intel NG80386SX-16 C STEP
Intel NG80386SX-16 C STEP Top Side
NG80386SX-16
C STEP
L0242425
(m) (c) '85 '87
Intel NG80386SX-16 C STEP Back Side
5002060G
CE 022
EE
Donated by Sven Brotkorb. Thanks a lot!  
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Core Frequency:16 MHz
Board Frequency:16 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:275,000
Circuit Size:1.50
Voltage:5 V
Introduced:June 16, 1988
Manufactured:week 24/1990
CPU Code:i386 SX
P9
Package Type:Plastic
PQFP-100
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Intel A80387DX-20
Intel A80387DX-20 Top Side
A80387DX-20
L0260040
(m)(c) '86, '88
Intel A80387DX-20 Back Side
90096458AF
MALAY
UJ 024
The Intel 387DX is the second generation Intel 387 and was introduced in 1989. This version is done in a more advanced CMOS process than the 80387 that enables the coprocessor to run at a maximum frequency of 33 MHz, while the 80387 had a maximum frequency of 25 MHz.
The 387DX is about 20% faster than the 80387 at the same clock frequency. The Intel 387DX (and its predecessor 80387) are the only 387 coprocessors that support asynchronous operation of CPU and FPU. The 387 consists of a bus interface unit and a numerical execution unit. The bus interface unit always runs at the speed of the CPU clock.
 
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Core Frequency:20 MHz
Board Frequency:20 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Introduced:1989
Manufactured:week 26/1990
Made in:Malaysia
L1 Cache:8 KB
CPU Code:i387 DX
Package Type:Ceramic
PGA-68
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Intel N80387SX-16
Intel N80387SX-16 Top Side
N80387SX-16
SX237
L0260221
INTEL (M)(C) '86
Intel N80387SX-16 Back Side
30183190
AA PE25
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Core Frequency:16 MHz
Board Frequency:16 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Introduced:1986
Manufactured:week 26/1990
L1 Cache:8 KB
CPU Code:i387 SX
Intel S-Spec: SX237
Package Type:Plastic
PLCC-48
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Intel A80860XR-40
Intel A80860XR-40 Top Side
A80860XR-40
I0282108 SX373
INTEL(M)(C)'88'89
Intel A80860XR-40 Back Side
90174281CQ
USA
I 26
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Core Frequency:40 MHz
Board Frequency:40 MHz
Data bus (ext.):64 Bit
Address bus:64 Bit
Transistors:2,500,000
Circuit Size:0.80
Introduced:1988
Manufactured:week 28/1990
L1 Cache:4+8 KB
CPU Code:N10
Intel S-Spec: SX373
Package Type:Ceramic
PGA-168
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Intel A80387DX-33
Intel A80387DX-33 Top Side
A80387DX-33
L0300329
(m)(c) '86, '88
Intel A80387DX-33 Back Side
90185171AE
MALAY 027
UJ
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Core Frequency:33 MHz
Board Frequency:33 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Introduced:1989
Manufactured:week 30/1990
Made in:Malaysia
L1 Cache:8 KB
CPU Code:i387 DX
Package Type:Ceramic
PGA-68
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Intel C80287XL
Intel C80287XL Top Side
C80287XL
L0371319
(m)(c) '80 '86
Intel C80287XL Back Side
8019709SAD
MALAY
WEZ 034
This chip is Intel's second-generation 287, first introduced in 1990. Since it is based on the 80387 coprocessor core, it features full IEEE 754 compatibility and faster instruction execution. Intel claims about 50% faster operation than the 80287 for typical benchmark tests. Compared with benchmark results for the AMD 80C287, which is identical to the Intel 80287, the Intel 287XL performed 66% faster than the AMD 80C287 on a fractal benchmark and 66% faster on the Whetstone benchmark.
Since the 287XL has all the additional instructions and enhancements of a 387, most software automatically identifies it as an 80387-compatible coprocessor and therefore can make use of extra 387-only features, such as the FSIN and FCOS instructions.
The 287XL is manufactured in CMOS and therefore uses much less power than the older NMOS-based 80287. At 12.5 MHz, the power consumption is rated at max. 675 mW, about 1/4 of the 80287 power consumption. The 287XL is available in either a 40-pin CERDIP (ceramic dual inline package) or a 44 pin PLCC (plastic leaded chip carrier). (This latter version is called the 287XLT and intended mainly for laptop use.) The 287XL is rated for speeds of up to 12.5 MHz.
 
Comment by Paul Collins (pi314aussie[at]yahoo.com):
Our shop sold these in big cardboard boxes. They were 20MHz chips, sold as covering all speed m/boards out there from 6MHz to 20MHz.
See my note for D80287-10......my own personal 286-20 m/board run a fixed 10MHz clock for the FPU co-pro socket, so where were these m/boards that needed a true 20MHz chip??? My m/board was made in 1993! (After the release of the XL-20 FPU's).
 
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Core Frequency:12 MHz
Board Frequency:12 MHz
Introduced:1990
Manufactured:week 37/1990
Made in:Malaysia
Package Type:Ceramic
DIP-40
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Intel NG80386SX-16
Intel NG80386SX-16 Top Side
NG80386SX-16
L9430274
(M)(C) '85 '87
Intel NG80386SX-16 Back Side
8932221M
CB 939
E
Donated by Jorge Segovia. Thanks a lot!  
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Core Frequency:16 MHz
Board Frequency:16 MHz
Data bus (ext.):16 Bit
Address bus:24 Bit
Transistors:275,000
Circuit Size:1.50
Voltage:5 V
Introduced:June 16, 1988
Manufactured:week 40/1990
CPU Code:i386 SX
P9
Package Type:Plastic
PQFP-100
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Intel A80387DX-25
Intel A80387DX-25 Top Side
A80387DX-25
SX106
L9401505
INTEL (m)(c) 1986
Intel A80387DX-25 Back Side
39331280AA
MALAY
IS 939
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Core Frequency:25 MHz
Board Frequency:25 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Introduced:1989
Manufactured:week 40/1990
Made in:Malaysia
L1 Cache:8 KB
CPU Code:i387 DX
Intel S-Spec: SX106
Package Type:Ceramic
PGA-68
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Intel A80486DX-33
Intel A80486DX-33 Top Side
A80486DX-33
SX329
L0480254
INTEL (M) (c) 1989
Intel A80486DX-33 Back Side
90365861CC
USA
L 46
Donated by Christian Lederer. 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:1,185,000
Circuit Size:1.00
Voltage:5 V
Introduced:May 7, 1990
Manufactured:week 48/1990
L1 Cache:8 KB
CPU Code:i486 DX
P4
Intel S-Spec: SX329
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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Intel A80386DX-25 IV
Intel A80386DX-25 IV Top Side
A80386DX-25 IV
SX218
L1264103
INTEL (m) (c) '85
Intel A80386DX-25 IV Back Side
90445893AA
MALAY
BZ 051
Donated by Jorge Segovia. Thanks a lot!  
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Core Frequency:25 MHz
Board Frequency:25 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:275,000
Circuit Size:1.50
Voltage:5 V
Introduced:April 4, 1988
Manufactured:week 52/1990
Made in:Malaysia
CPU Code:i386 DX
Intel S-Spec: SX218
Package Type:Ceramic
PGA-132
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