View Full Version : Clock speed
shaunywhite
04-08-2001, 05:47 AM
My problem is my CPU. The accompanying blurb described it as a Cyrix M11 333 MMX. From that I assumed the 333 referred to the clock speed. But every system test I've applied to date comes up with a speed of between 262 and 266.
My query is: What is the significance of the 333? I understand there is a close integration between the motherboard (Acer ALI M1513 -- speed multiplier 1/2x) and the processing unit. Maybe this is significant.
Any info very helpfull
thanx
AMD and Intel both use the clock speed of their microprocessors, measured in MHz, to compare their chips against those of the competition. Microprocessors produced by AMD and Cyrix also are compatible with Intel's chips; Intel-designed software runs on all three architectures. But the design of the Cyrix M II processor is different enough that its chips yield
performance similar to Intel's Celeron while actually running at a slower clock speed.
To indicate this, Cyrix has sold its chips according to its own PR rating, which has varied according to the performance of the chips opposite it. For example, an M II with a PR333 rating actually runs at 250 MHz, using an 83-MHz system bus.
http://www.techweb.com/wire/story/TWB19990316S0010
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TVC15
04-08-2001, 06:21 AM
The 333 is what Cyrix call a "PR" rating which means the chip is supposed to be equivalant in performance to a Pentium 333.
From what I remember, the Cyrix 333 actually runs at 83 x 3 which comes to 249 MHz.
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