In 1996, Cyrix released a line of 586 and 686 CPUs which outperformed Pentiums of the same clock speed. Cyrix adopted a somewhat less controversial performance rating than NexGen. It is based on the relative performance of their CPU and Intel's Pentium using the PC Magazine Winstone test.
Cyrix 150MHz 6x86 slightly outperforms a Pentium-200 on Winstone and is identified as a Cx6x86-200+. The plus sign indicates that the speed is a P-rating rather than an actual clock rating.
The new ratings are calculated using the comparative performance of the CPU running the Winstone benchmark program. The CPU is given the rating of the Intel Pentium CPU which is just beaten by the CPU being tested.
Last update: spelling 12Oct02
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