Does MMX benchmark test SSSE3, SSE4.1, or SSE4.2?

[cnchang]

I ran the HWinfo32 v372beta benchmark against my Phenom II 955BE, and some of the results baffled me.

955BE outperforms Core 2 Duo E6700 by a large margin in CPU and FPU Benchmarks, but gets nudged in MMX Benchmark test. Here are the scores:
[Benchmark_CPU]
Intel Core 2 Duo E6700=51765
AMD Phenom II X4 955 Black Edition=134705
[Benchmark_FPU]
Intel Core 2 Duo E6700=40075
AMD Phenom II X4 955 Black Edition=153545
[Benchmark_MMX]
Intel Core 2 Duo E6700=82312
AMD Phenom II X4 955 Black Edition=81570

I have run benchmark tests twice to confirm this unexplainable result. I can't think of a good reason to explain except maybe this MMX benchmark test is heavily weighed in on the SSSE3, SSE4.1, or SSE4.2?

 

[Martin]

MMX benchmark doesn't test SSE, it's a pure MMX instruction set.
Since you CPU is a Quad-core, then it's obvious that it outperforms a Dual-Core CPU, because the benchmark users resources of all available cores.
If you want to test a pure core performance, then you should run the benchmark in single-threaded mode.

 

[cnchang]

If MMX test has nothing to do with SSSE3, SSE4.1, or SSE4.2 extension, then do you have any ideas on the HWinfo MMX benchmark scores where E6700 nudged 955BE?