It is reasonable to assume that pipeline length is influenced by marketing. More MHz mean a competitive advantage, even if they yield no extra CPU power. Athlon 64 shows that a 2.2Gz 12 stage pipeline can be equivalent to the 3.2 GHz 20 stage pipeline of a P4 (the AMD model naming then tries to hide the lower MHz numbers).
This demonstrates that performance can be achieved in different ways, and intel went for "speed demon" - throw MHz at the problem. There are good reasons for this, but for example the "brainiacs" with lower MHz usually have lower power consumption. Maybe a more brainiac approach was opposed by marketing? They could never have pushed through a clearly inferior solution though.
Finally, I don't think that the Prescott pipeline will be quite as long as 30 stages, but time will tell. The architectural differences between Prescott and Northwood (the current P4) will be a lot smaller than those between Northwood and the P3. Therefore I expect that the number of apps that will run slower on a Prescott (which, of course, needs a somewhat higher clock frequency) will be very small. So move along guys, there's nothing to see.
When you get a call from a telemarketer, just tell them "Oh, this sounds intriguing, but I have to go right now. I could call back in the evening tough, what's your home number?" They will of course reply that they don't want to get calls at home, to which you reply "Gee, that's funny, neither do I" and hang up.
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It is reasonable to assume that pipeline length is influenced by marketing. More MHz mean a competitive advantage, even if they yield no extra CPU power. Athlon 64 shows that a 2.2Gz 12 stage pipeline can be equivalent to the 3.2 GHz 20 stage pipeline of a P4 (the AMD model naming then tries to hide the lower MHz numbers).
This demonstrates that performance can be achieved in different ways, and intel went for "speed demon" - throw MHz at the problem. There are good reasons for this, but for example the "brainiacs" with lower MHz usually have lower power consumption. Maybe a more brainiac approach was opposed by marketing? They could never have pushed through a clearly inferior solution though.
Finally, I don't think that the Prescott pipeline will be quite as long as 30 stages, but time will tell. The architectural differences between Prescott and Northwood (the current P4) will be a lot smaller than those between Northwood and the P3. Therefore I expect that the number of apps that will run slower on a Prescott (which, of course, needs a somewhat higher clock frequency) will be very small. So move along guys, there's nothing to see.
doesn't that mean that if you dont't make mistakes, you're making a mistake and thereby... *head spins*
When you get a call from a telemarketer, just tell them "Oh, this sounds intriguing, but I have to go right now. I could call back in the evening tough, what's your home number?" They will of course reply that they don't want to get calls at home, to which you reply "Gee, that's funny, neither do I" and hang up.
Well, at least you can prevent Goodyear from using the rubber, right?
Yeah right, as if Goodyear even wanted to make tires that don't wear out.