CPGA168 or Socket 0/1/486 (Intel/AMD/Cyrix)

This is where socketed CPUs started. CPGA168 chips ushered in the 486 era and were sometimes informally known as Socket 0 or Socket 486. Featuring a nice purple ceramic body and golden pins/caps, these chips were among the last not to require a heatsink. As it turns out, 486 CPUs existed for Socket 1, 2 or 3.

Intel i486 SX 25MHz SX411

Intel i486 SX 25MHz SX679

Intel i486 DX 33MHz SX419

Intel i486 SX2 50MHz SX845

Intel i486 DX2 66Mhz SX762

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Late 486 CPU with FPU, internal clock running at a multiplier of 2 for a clock rate of 66Mhz with outside bus running at 33Mhz.

Intel OverDrive DX 33Mhz SZ698

Intel OverDrive DX2 50Mhz SZ934

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Intel Overdrive CPUs were often sold as “plug in” upgrades for older systems, and were very similar in terms of performance. They were sold with permanently attached heatsink. This one appears to be a clock doubled version, running at 50Mhz, so ideal for upgrading boards running the original 486SX-25.

Intel OverDrive DX2 66Mhz SZ904

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Another upgrade CPU, this one probably better suited to upgrading boards originally running with 486DX-33s.

2 Responses to CPGA168 or Socket 0/1/486 (Intel/AMD/Cyrix)

  1. Pingback: Mega Random: Merry Christmas, Site Updates, Transport Updates etc. | Gough's Tech Zone

  2. Andiy says:

    I486 dx2 66MHz my first processor with 16mb sdram on win 3.1 later 95. Old memories of that beast.

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