PREMIO Computer, Inc. - Intel Pentium III "Katmai" and "Coppermine" Slot 1 Performance

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Last revised:
11/25/1999

Intel Pentium III Katmai/Coppermine Slot 1 Performance Comparison
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From the testing data, it's clear that the Coppermine CPU outperforms the Katmai CPU. Let's take a closer look by comparing these two CPUs side by side at the same clock speed.

The graph above shows the Winstone 99 (both 98SE and NT) performance level of both CPUs running at 500MHz. The blue graph represents the Katmai, while the light green graph is for the Coppermine. In 98SE, the Coppermine is faster than the Katmai. For the scale of Winstone 99, 1.0 or higher means there's significant performance improvement. Under NT, the Coppermine still manages to edge out the Katmai, albeit by a smaller margin.

And lastly, the graph above shows the Winstone 99 (both 98SE and NT) performance level of both CPUs running at 600MHz, which is the highest Katmai speed. The story is the same: the Coppermine outperforms the Katmai at the same clock speed.

In conclusion, is the Coppermine a worthy successor to the Katmai? Based on the testing data, the answer is yes. Besides the performance enhancements, thanks to its 0.18 micron technology, the Coppermine is able to scale beyond 600MHz. Look for Pentium III Coppermine processors running at 800MHz or higher to be widely available by Q1/2000.

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