Socket 7 Synthetic CPU Benchmarks

To provide some rough guidance on comparing 5th- and 6th-generation (Socket 7-era) CPUs, the charts below illustrate typical SpeedSys scores for a variety of processors from Intel, AMD and Cyrix. Since IBM, Texas Instruments and ST were authorised rebrands of Cyrix processors, you can use the closest Cyrix chip for reference. I've split the results into low-to-mid range and mid-to-high range for better clarity. Alternatively, click here for the full image.

The version of the DOS SpeedSys synthetic benchmarking utility used to gather these results was v4.75.

Note that this is a synthetic benchmark (not based on real-world tests) - results can vary when compared to other seemingly identical CPUs, due to the motherboard design, its chipset, and other components that make up the tested system. As such, do take these figures with a pinch of salt.

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It is also important to mention that the clock speeds mentioned are true clock speeds. In the case of Cyrix/IBM and AMD CPUs, they were given a 'PR' (Pentium Rating) that was stamped on top of the chip. For example, the Cyrix 6x86MX PR233 actually runs at 187 MHz but provides an equivalent performance to an Intel Pentium running at 233 MHz.