Because although PCs rate higher in MHZ, their chip architecture is so awful that its performance suffers. Thus, the speed rating drops to about half of a Mac's, which has excellent system architecture. So, a Dual 2.5 Ghz G5 is like... off the charts as far as Pentium goes. Hell, a 1 Ghz G4, since the speed rating improved, runs quicker than a 2.0 P4 and deteriorates faster. give it a year, and that same 1 yr old 1Ghz g4 will be faster than a 1 year old 3ghz P4. There are a tons of factors that decide how fast your computer actually runs, and intel just likes to impress people with big numbers, just like Nvidia does with their graphics cards.
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In a haze
A stormy haze
I’ll be around
I’ll be loving you
Always
Always
Here I am
And I’ll take my time
Here I am
And I’ll wait in line
Always
Always...