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Am486 SX2-50 ES (Week 52, Year 1993)
A80486SX2-50 D AMD ES (24361)
The earliest sample known of the clock-doubled 486 clone from AMD. The 486 SX-2 50 didn't include an FPU and was clocked at a board speed of 25 Mhz. In opposite to the others engineering-samples, this particular sample come with no numbers in the top side. Produced in late 1993, the final revision of this CPU was announced in September '94.