80486 DX
Story
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The 80486 was a remarkable improvement in the world of computing. For the first time, the processors had a built-in math coprocessor, with the resulting computational advantage.
Initially the DX model was manufactured and a little later the DX2 and DX4 were born.
The DX2 processors were characterized by internally doubling the clock speed of the processor. In other words, a DX2-66 processor used a 33 MHz bus and the processor doubled it to achieve the final 66 MHz speed.
Later, the DX4 appeared on the market, which did not actually multiply its frequency by 4. They actually multiplied it by 3. So if we follow the same previous example, a 486 DX4-100, it worked with a 33 MHz bus that was multiplied by 3, to actually give 99 MHz speed. The 4 was placed simply for marketing reasons.
SOCKET
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PGA168
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Pin Grid Array: Also known as Socket 486 and also known as Socket 0.
It is an expanded version of its successor the socket 132.
In this case it uses rows of 17 pins instead of the 14 as its predecessor
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It was used mainly in the 80486 processors in all its versions, both SX, DX, DX2 and DX4.
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80486 DX
Intel A80486DX-33
TYPE: 486
Speed: 33 MHz
Bus: 33 MHz
Clock: X1
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX419
Voltage: 5V
Manufacturing: 5/1990
Gift: Armin Hoffmann
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Intel A80486DX-50
TYPE: 486
Speed: 50 MHz
Bus: 50 MHz
Clock: X1
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX546
Voltage: 5V
Manufacturing: 7/1990
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80486 DX2
Intel A80486DX2-50
TYPE: 486
Speed: 50 MHz
Bus: 25 MHz
Clock: X2
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX641
Voltage: 5V
Manufacturing: 1/1992
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Intel A80486DX2-66
TYPE: 486
Speed: 66 MHz
Bus: 33 MHz
Clock: X2
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX762
Voltage: 5V
Manufacturing: 2/1992
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Intel A80486DX2-66
TYPE: 486
Speed: 66 MHz
Bus: 33 MHz
Clock: X2
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX911
Voltage: 5V
Manufacture: 8/1992
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Intel A80486DX2-66
TYPE: 486
Speed: 66 MHz
Bus: 33 MHz
Clock: X2
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX807
Voltage: 5V
Manufacturing: 2/1992
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In these photos you can see how the processor has been highlighted. We can see that printed on the back appears the identification "i50". This tells us that it is really a 486 DX-2-50 MHz, but the seller remarked it to make it pass as a 486 DX2-66 MHz.
When installed on the motherboard it was operated at 66 MHz by overclocking and probably nobody noticed the difference.
The only way to find out was to remove it from the board and look at the back of the processor.
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Intel A80486DX2-66 FALSE
TYPE: 486
False Speed: 66MHz
Actual Speed: 50MHz
Fake Bus: 33MHz
Royal Bus: 25MHz
Watch: x2
Cache: 8KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec False: SX807
Voltage: 5V
Manufacturing: 2 / 1992
Purchased at: Spain
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Intel A80486DX2-66
TYPE: 486
Speed: 66 MHz
Bus: 33 MHz
Clock: X2
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX953
Voltage: 5V
Manufacturing: 2/1992
Gift: Juan Rad (Nuberu)
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Intel A80486DX2-66
TYPE: 486
Speed: 66 MHz
Bus: 33 MHz
Clock: X2
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX955
Voltage: 5V
Manufacturing: 2/1992
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Intel A80486DX2-66 OEM
TYPE: 486
Speed: 66 MHz
Bus: 33 MHz
Clock: X2
Cache: 8 KB
Coprocessor: YES
No. of transistors: 1,185,000
Package: CPGA
Socket: PGA168
sSpec: SX955
Voltage: 5V
Manufacture: 8/1992
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80486 DX4
Intel A80486DX4-75
TYPE: 486
Speed: 75 MHz
Bus: 25 MHz
Clock: X3
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,600,000
Package: CPGA
Socket: PGA168
sSpec: SK047
Voltage: 3V
Manufacture: 3/1994
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Intel A80486DX4-100
TYPE: 486
Speed: 100 MHz
Bus: 33 MHz
Clock: X3
Cache: 8 KB
Coprocessor: YES
Number of transistors: 1,600,000
Package: CPGA
Socket: PGA168
sSpec: SK051
Voltage: 3V
Manufacture: 3/1994
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Intel A80486DX4-100
TYPE: 486
Speed: 100 MHz
Bus: 33 MHz
Clock: X3
Cache: 8 KB
Coprocessor: YES
No. of transistors: 1,600,000
Package: CPGA
Socket: PGA168
sSpec: SK096
Voltage: 3V
Manufacturing: 3/1994
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Intel A80486DX4-100
TYPE: 486
Speed: 100 MHz
Bus: 33 MHz
Clock: X3
Cache: 8 KB
Coprocessor: YES
No. of transistors: 1,600,000
Package: CPGA
Socket: PGA168
sSpec: SK096
Voltage: 3V
Manufacturing: 3/1994
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White logo
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Intel A80486DX4-100
TYPE: 486 Mobile
Speed: 100 MHz
Bus: 33 MHz
Clock: X3
Cache: 8 KB
Coprocessor: YES
No. of transistors: 1,600,000
Package: 208 Pin SQFP
Socket: SQFP208
sSpec: SK053
Voltage: 3.3 V
Manufacturing: 3/1994
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