Originally posted by Feanor2004
Maybe it's possible to give a rough estimate?... couse I'm finaly lost in these nombers
This is can be a really difficult and technical question, but argueably, the G4 is at least 1.5 times the equivalent clock speed of the P4. However, because of the way the G4 can handle computations it can be faster in the handling of certain numeral sets. I will find a link from Apple explaining this if I can.
But, other things come into play as well, clock speed being just one number like horsepower. In a car, horsepower is a useful number, but some cars with 160h can be as fast or faster than cars with 220h, this number is checked by the weight of the vehicle, the amount of torque, the transmission, etc. In a computer this has the same sets of complications, regarding FSB, memory, etc. Plus, there is the accounting of the 'throttle-down' effect that P4s experience in portables, that 3.0 Ghz number is typically the fastest the machine can get, but not an acutal measure of performance.
In my experience, my 550mhz G4 TiBook is as useful as a 2.0 Ghz P4 desktop in doing almost everything, however I get more done because of the ease of use in OSX. That's more a measure to me than anything else.
Remember two things about clock speed:
1. The internet isn't any faster with a 3.0 Ghz chip than a 2.2.
2. Your printer won't print any faster.