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AMD 486
  AMD A80486DX-40 w/o Windows Logo
  AMD A80486DX-40
  AMD A80486DX2-50
  AMD A80486DX2-66
  AMD A80486DX2-66, variant
  AMD A80486DXL2-66
  AMD A80486DX2-66NV8T
  AMD Am486DE2-66V8TGC
  AMD A80486DX2-66SV8B
  AMD Am486DX2-66V16BGC
  AMD A80486DX2-80 V8T
  AMD A80486DX2-80NV8T
  AMD A80486DX4-90NV8T
  AMD A80486DX4-100NV8T
  AMD A80486DX4-100SV8B
  AMD Am486DX4-100V16BGC
  AMD Am486DX4-100SV16BGI
  AMD A80486DX4-120NV8T
  AMD A80486DX4-120SV8B
  AMD Am5x86-P75
  AMD Am5x86-P75 X5-133ADW
  AMD Am5x86-P75 X5-133ADZ
  AMD Am5x86-P75 X5-133SFZ
  AMD Am5x86-P75 DX5-133V16BHC
  AMD Am5x86-P75 DX5-133W16BGC
  AMD Am5x86-P75+ X5-150ADW
» AMD overview
» all 486 chips
 
The AMD Am486 DX Processor
The Am486 is a 80486-class processors produced by AMD in the 1990s. Intel beat AMD to market by nearly four years, but AMD priced its 40 MHz 486 at or below Intel's price for a 33 MHz chip, offering about 20% better performance for the same price. Early AMD 486 chips were drop-in replacements for their Intel counterparts, but later AMD clock-doubled 486s ran at 3.3 volts instead of Intel's 5 volts, which limited their suitability as upgrade chips until third-party voltage adapters appeared on the market.
 
While the Am386 was primarily used by small computer manufacturers, the Am486DX, DX2, and SX2 chips gained acceptance among larger computer manufactuers, expecially Acer and Compaq, in the 1994 time frame.
 
AMD's higher clocked 486 chips provided superior performance to many of the early Pentium chips, especially the 60 and 66 MHz launch products. While equivalent Intel 80486DX4 chips were priced high and required a minor socket modification, AMD priced low. Intel's DX4 chips had twice the cache of the AMD chips, giving them a slight performance edge, but AMD's DX4-100 usually cost less than Intel's DX2-66.
 
The AMD Am5x86 was an enhanced Am486.
AMD A80486DX-40 w/o Windows Logo
AMD A80486DX-40 w/o Windows Logo Top Side
Am486DX-40
A80486DX-40
C 337BO8W
(m) AMD
.24361
AMD A80486DX-40 w/o Windows Logo Back Side
MALAYSIA
9336DP W
5973C5
add comment
Core Frequency:40 MHz
Board Frequency:40 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:1,000,000
Voltage:5 V
Introduced:04/1993
Manufactured:week 36/1993
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 2/3
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AMD A80486DX-40
AMD A80486DX-40 Top Side
Am486DX-40
A80486DX-40
E6 9437GPF
(m) AMD
MALAYSIA
WinLogo
.24361
AMD A80486DX-40 Back Side
add comment
Core Frequency:40 MHz
Board Frequency:40 MHz
Data bus (ext.):32 Bit
Address bus:32 Bit
Transistors:1,000,000
Voltage:5 V
Introduced:04/1993
Manufactured:week 37/1994
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 2/3
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AMD A80486DX2-50
AMD A80486DX2-50 Top Side
Am486 DX2-50
A80486DX2-50
D 349BWJY
(m) AMD
WinLogo
MALAY
AMD A80486DX2-50 Back Side
add comment
Core Frequency:50 MHz
Board Frequency:25 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:5 V
Introduced:09/1994
Manufactured:week 49/1993
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX2-66
AMD A80486DX2-66 Top Side
Am486DX2-66
A80486DX2-66
D 410B6EA
(m) AMD
HEATSINK AND
FAN REQ'D
WinLogo
MALAY
AMD A80486DX2-66 Back Side
add comment
Core Frequency:66 MHz
Board Frequency:33 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:5 V
Introduced:09/1994
Manufactured:week 10/1994
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX2-66, variant
AMD A80486DX2-66, variant Top Side
Am486DX2-66
A80486DX2-66
E6 9425CPM
(m) AMD
WinLogo
MALAYSIA
AMD A80486DX2-66, variant Back Side
add comment
Core Frequency:66 MHz
Board Frequency:33 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:5 V
Introduced:09/1994
Manufactured:week 25/1994
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DXL2-66
AMD A80486DXL2-66 Top Side
Am486 DXL2-66
A80486DXL2-66
E6 9433APB
(m) AMD
WinLogo
MALAYSIA
AMD A80486DXL2-66 Back Side
add comment
Core Frequency:66 MHz
Board Frequency:33 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:5 V
Introduced:09/1994
Manufactured:week 33/1994
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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Enhanced Am486, built around the standard AMD 486 core, incorporated write-back cache and enhanced power management features. These characteristics made them a good choice for reduced power consumption desktop systems and for the portable market segment. With clock-tripled performance speeds up to 120 MHz, these 3-V CPUs offered great price/performance value for both desktop and portable computers by providing power management and write-back enhanced features at no extra premium.
 
The enhanced Am486 microprocessors featured enhanced power management features, including SMM and clock control. These enhancements allow reduced power consumption during system inactivity. The SMM function is implemented with an industry standard two-pin interface. In write-back mode, frequently used data is stored in the high-speed internal cache and accessed continually from within until the data is modified, thus increasing the performance of the CPU.
AMD A80486DX2-66NV8T
AMD A80486DX2-66NV8T Top Side
Am486DX2-66
A80486DX2-66NV8T
A 9509GPD
(m) AMD
3 VOLT
6023A
WinLogo
MALAYSIA
AMD A80486DX2-66NV8T Back Side
Enhanced Am486, 8 KB write-through cache
 
add comment
Core Frequency:66 MHz
Board Frequency:33 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Core / I/O Voltage:3.3 / 5 V
Introduced:09/1994
Manufactured:week 09/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am486DE2-66V8TGC
AMD Am486DE2-66V8TGC Top Side
Am486DE2-66V8TGC
A 9705GPA
(m) AMD
MALAYSIA
AMD Am486DE2-66V8TGC Back Side
Enhanced Am486, 8 KB write-through cache, commercial range 0 - +85C
 
References: Datasheet
 
add comment
Core Frequency:66 MHz
Board Frequency:33 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Core / I/O Voltage:3.3 / 5 V
Introduced:09/1994
Manufactured:week 09/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX2-66SV8B
AMD A80486DX2-66SV8B Top Side
Am486DX2-66
A80486DX2-66SV8B
C 9542GPH
(m) AMD
3 VOLT
.25398 Win95Logo
AMD A80486DX2-66SV8B Back Side
Enhanced Am486, SMM, 8 KB write-back cache
 
add comment
Core Frequency:66 MHz
Board Frequency:33 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 42/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am486DX2-66V16BGC
AMD Am486DX2-66V16BGC Top Side
Am486DX2-66V16BGC
B 9804BPA
(m) AMD
WinLogo
MALAYSIA
25544
AMD Am486DX2-66V16BGC Back Side
Enhanced Am486, 16 KB write-back cache, commercial range 0 - +85C
 
References: Datasheet
 
add comment
Core Frequency:66 MHz
Board Frequency:33 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 04/1998
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX2-80 V8T
AMD A80486DX2-80 V8T Top Side
Am486DX2-80
A80486DX2-80 V8T
A 9450EPA T
(m) AMD
3 VOLT
HEATSINK REQ'D
.25253 WinLogo
MALAYSIA
AMD A80486DX2-80 V8T Back Side
Enhanced Am486 with ICE microcode, 8 KB write-through cache
 
add comment
Core Frequency:80 MHz
Board Frequency:40 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Core / I/O Voltage:3.3 / 5 V
Introduced:09/1994
Manufactured:week 50/1994
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 2/3
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AMD A80486DX2-80NV8T
AMD A80486DX2-80NV8T Top Side
Am486DX2-80
A80486DX2-80NV8T
B 9520 APD T
(m) AMD
3 VOLT
HEATSINK REQ'D
.25253 WinLogo
AMD A80486DX2-80NV8T Back Side
Enhanced Am486, 8 KB write-through cache
 
add comment
Core Frequency:80 MHz
Board Frequency:40 MHz
Clock Multiplier:2.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Core / I/O Voltage:3.3 / 5 V
Introduced:09/1994
Manufactured:week 20/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 2/3
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AMD A80486DX4-90NV8T
AMD A80486DX4-90NV8T Top Side
Am486DX4-90
A80486DX4-90NV8T
BC 9513DPA T
(m) AMD
3 VOLT
HEATSINK AND
FAN REQ'D
.25253 WinLogo
MALAYSIA
AMD A80486DX4-90NV8T Back Side
Enhanced Am486, 8 KB write-through cache
 
add comment
Core Frequency:90 MHz
Board Frequency:30 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 13/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX4-100NV8T
AMD A80486DX4-100NV8T Top Side
Am486DX4-100
A80486DX4-100NV8T
AY 9506DPA T
(m) AMD
3 VOLT
HEATSINK AND FAN REQ'D
.25253 WinLogo
AMD A80486DX4-100NV8T Back Side
Donated by Stephan Meisinger. Thanks a lot!  
Enhanced Am486, 8 KB write-through cache
 
add comment
Core Frequency:100 MHz
Board Frequency:33 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 06/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX4-100SV8B
AMD A80486DX4-100SV8B Top Side
Am486DX4-100
A80486DX4-100SV8B
CV 9542FPB
(m) AMD
3 VOLT
HEATSINK REQ'D
.25398 Win95Logo
AMD A80486DX4-100SV8B Back Side
Enhanced Am486, SMM, 8 KB write-back cache
 
add comment
Core Frequency:100 MHz
Board Frequency:33 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 42/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am486DX4-100V16BGC
AMD Am486DX4-100V16BGC Top Side
Am486DX4-100V16BGC
B 9732EPA
(m) AMD
.25544 WinLogo
MALAYSIA
AMD Am486DX4-100V16BGC Back Side
Enhanced Am486, 16 KB write-back cache, commercial range 0 - +85C
 
add comment
Core Frequency:100 MHz
Board Frequency:33 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 32/1997
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am486DX4-100SV16BGI
AMD Am486DX4-100SV16BGI Top Side
Am486DX4-100SV16BGI
B1 0150D5C
(m) AMD
.25544 WinLogo
MALAYSIA
AMD Am486DX4-100SV16BGI Back Side
Enhanced Am486, 16 KB write-back cache, SMM, industrial range -40 - +100°C
 
add comment
Core Frequency:100 MHz
Board Frequency:33 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 50/2001
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX4-120NV8T
AMD A80486DX4-120NV8T Top Side
Am486 DX4-120
A80486DX4-120NV8T
B 9516FPE T
(m) AMD
3 VOLT
HEATSINK REQ'D
WinLogo
AMD A80486DX4-120NV8T Back Side
Enhanced Am486, 8 KB write-through cache
 
add comment
Core Frequency:120 MHz
Board Frequency:40 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 16/1995
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD A80486DX4-120SV8B
AMD A80486DX4-120SV8B Top Side
Am486 DX4-120
A80486DX4-120SV8B
C 9603BPC
(m) AMD
3 VOLT
HEATSINK AND
FAN REQ'D
Win95Logo
AMD A80486DX4-120SV8B Back Side
Enhanced Am486, SMM, 8 KB write-back cache
 
add comment
Core Frequency:120 MHz
Board Frequency:40 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.50
Voltage:3.3 V
Introduced:09/1994
Manufactured:week 03/1996
Made in:Malaysia
L1 Cache:8 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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The AMD 5x86 Processor
Introduced in November 1995, the AMD 5x86 is a standard 486 processor with an internally-set multiplier of 4, allowing it to run at 133 MHz on systems without official support for clock-multiplied DX2 or DX4 486 processors. Like most of the later 486 parts, the 5x86 featured write-back L1 cache, and unlike all but a few, a generous 16 kilobytes rather than the more common 8KB.
 
Since having a clock multiplier of four was not part of the original Socket 3 design, AMD made the 5x86 look for a two times setting from the motherboard and interpret that as four times instead. In other words, to use the 5x86 you want to set the motherboard to the 2x setting. This will actually cause the 5x86 to run at 4x.
 
The combination of best-in-class clock speed and the write-back cache allowed the 5x86 to equal or slightly surpass an Intel Pentium 75 MHz processor in business application performance. Also, because it was based on a pure 486 design, it was compatible with older systems, something its slightly faster rival, the Cyrix 5x86, had trouble with.
AMD Am5x86-P75
AMD Am5x86-P75 Top Side
Am5x86-P75
DS91467
9721FPB
(m) AMD
MALAYSIA
Win95 Logo
AMD Am5x86-P75 Back Side
Comment by Hopeapaa (hopeapaa[at]hotmail.com):
This little chip didn't have any multiplier-lock so I ran it using the 3x multiplier supported by the motherboard and used the clock-speed of 3x50 = 150 Mhz. With this kind of configuration the chip really stood up the name "P75", since it slightly over-performed the Intel Pentium 75 Mhz. I had this chip in active use until the Pentium 2 and K6 chips hit the 300 Mhz barrier and I upgraded the motherboard and CPU to K6 300 Mhz in the year 1998.
 
add comment
Core Frequency:133 MHz
Board Frequency:33 MHz
Clock Multiplier:4.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.35
Voltage:3.45 V
Introduced:09/1995
Manufactured:week 21/1997
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am5x86-P75 X5-133ADW
AMD Am5x86-P75 X5-133ADW Top Side
Am5x86-P75
AMD-X5-133ADW
A 9647FPM
(m) AMD
3.45 VOLT
HEATSINK AND
FAN REQD
MALAYSIA
Win95 Logo
AMD Am5x86-P75 X5-133ADW Back Side
add comment
Core Frequency:133 MHz
Board Frequency:33 MHz
Clock Multiplier:4.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.35
Voltage:3.45 V
Introduced:09/1995
Manufactured:week 47/1996
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am5x86-P75 X5-133ADZ
AMD Am5x86-P75 X5-133ADZ Top Side
Am5x86-P75
AMD-X5-133ADZ
A 9606APG
(m) AMD
3.45VOLT
MALAYSIA
Win95 Logo
AMD Am5x86-P75 X5-133ADZ Back Side
Comment by Dirk (www.winhistory.de) (webmaster[at]winhistory.de):
A nice CPU, now runs in my socket 3 PC with 160 MHz (4x40MHz)! Over 340 Points in Norton SI! I love it, although I had to spend some artic silver .... nothing cheaper was in the near... =)
 
add comment
Core Frequency:133 MHz
Board Frequency:33 MHz
Clock Multiplier:4.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.35
Voltage:3.45 V
Introduced:09/1995
Manufactured:week 06/1996
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am5x86-P75 X5-133SFZ
AMD Am5x86-P75 X5-133SFZ Top Side
Am5x86-P75
AMD-X5-133SFZ 3.3-VOLT
9703BLB
(m) AMD
Win95 Logo
JAPAN
AMD Am5x86-P75 X5-133SFZ Back Side
add comment
Core Frequency:133 MHz
Board Frequency:33 MHz
Clock Multiplier:4.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.35
Voltage:3.3 V
Introduced:09/1995
Manufactured:week 03/1997
Made in:Japan
L1 Cache:16 KB
Package Type:Plastic
PQFP on
PGA-168
Socket: 1/2/3
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AMD Am5x86-P75 DX5-133V16BHC
AMD Am5x86-P75 DX5-133V16BHC Top Side
Am5x86-P75
AM486DX5-133V16BHC
9815FLA
(m) AMD
Win95 Logo
JAPAN
AMD Am5x86-P75 DX5-133V16BHC Back Side
KINGSTON-USA
TC5X86/133-CE
1545-006.B00
1545 REV G
A Kingston "TurboChip" 486 upgrade kit for 486 systems. It has a 133MHz AMD 5x86-P75 PQFP packed CPU mounted on a PGA curcuit board to fit into a standard 486 socket. A fan is mounted on top of the module. These kits were sold as upgrades for common i486 systems and came with an installation booklet and a chip puller.
 
Comment by Netster403 (webmaster[at]stolenbandwidth.net):
This is the same chip burried inside the Mitsibushi Amity VP Pentop computer. It was cooled by a large flexable copper pad. Thats why the sucker ran REALLY hot after a few hours of operation...
 
add comment
Core Frequency:133 MHz
Board Frequency:33 MHz
Clock Multiplier:4.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.35
Voltage:3.45 V
Introduced:09/1995
Manufactured:week 15/1998
Made in:Japan
L1 Cache:16 KB
Package Type:Plastic
PQFP on
PGA-168
Socket: 1/2/3
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AMD Am5x86-P75 DX5-133W16BGC
AMD Am5x86-P75 DX5-133W16BGC Top Side
Am5x86-P75
Am486 DX5-133W16BGC
9751BPA
A 9606APG
(m) AMD
MALAYSIA
Win Logo
AMD Am5x86-P75 DX5-133W16BGC Back Side
Donated by Christian Lederer. Thanks a lot!  
Comment by VK (disaja[at]kjsd.coij):
Had one of those! Loved having Pentium-class processing power in a fraction of the pentiums' cost!! :D
 
add comment
Core Frequency:133 MHz
Board Frequency:33 MHz
Clock Multiplier:4.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.35
Voltage:3.45 V
Manufactured:week 51/1997
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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AMD Am5x86-P75+ X5-150ADW
AMD Am5x86-P75+ X5-150ADW Top Side
Am5x86-P75+
AMD-X5-150ADW
A 9617DPA
(m) AMD
3.45 VOLT
HEATSINK AND
FAN REQD
MALAYSIA
Win95 Logo
AMD Am5x86-P75+ X5-150ADW Back Side
Donated by Mark Cassino. Thanks a lot!  
This version is a very rare P75+ and has a different clock multiplier of 3. It was designed for 50 MHz 486 systems and ran at an internal speed of 150 MHz.
 
add comment
Core Frequency:150 MHz
Board Frequency:50 MHz
Clock Multiplier:3.0
Data bus (ext.):32 Bit
Address bus:32 Bit
Circuit Size:0.35
Voltage:3.45 V
Manufactured:week 17/1996
Made in:Malaysia
L1 Cache:16 KB
Package Type:Ceramic
PGA-168
Socket: 1/2/3
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