Most software provide a minimum and/or recommended spec of hardware in order to the software. Within this list, we're usually informed of a clock speed for the CPU.
For example, Visual Studio has, as part of it's spec
1.6 GHz or faster processor
1 gigahertz (GHz) or faster x86- or x64-bit processor with SSE2 instruction set
CPU with two cores
Intel® Pentium® 4 or AMD Athlon® 64 processor (2 GHz or faster)
So, it means that if I run Visual Studio, which requires a 1.6Ghz processor with a 0.8Ghz processer (half the clock speed) then I'm likely to experience issues. However, the M-5Y10C is clocked at 0.8Ghz but according to CPU Benchmark's passmark, it scores 2590 where as something like Intel Atom 230 @ 1.60GHz scores only 230! Does this really mean that out of the 2 that only the Atom is 'guaranteed' to work?
Now, with Adobe Photoshop, it provides the model's makes so we can at least look them up and see the benchmark and get some idea of performance and make a decision based upon that.
I get the impression that the clock speed is fairly meaningless but, they still show the clock speed as a min spec meaning there must be something valid about it.
When companies show X ghz, or even
CPU with two cores (so no Ghz are displayed), how can we be sure the CPU we choose will suffice?