What makes one computer faster than another?
There are many factors that go into computer performance, and clock speed (the GHz rating of a processor) is just one aspect. The advertising people may have the general public fooled into thinking that clock speed is the only factor, but it isn’t. The structure of the memory heirarchy is very important, as is bus speed. A faster clock speed can be defeated by a slow memory or bus speed for most of today’s software.