How the 800 MHz FSB of future P4 effect P4 speed

i m surprised that even after the intro of 800 MHz FSB the roadmap doesn't show any increase in P4. shouldn't it be easy to reach 4Ghz with this FSB w/o any process shrink.??
If not y not..? can anybody enligthen me..??

I would say that a higher FSB equals hotter core, therefore it might be a bit hotter. Not sure about how true it is though.
Intel slowed down because the 3.06GHZ is already at 82W, they had to get a new HSF design in copper, AND add voltage regulators, AND require newer mobos to use it, AS WELL AS have a new voltage throttle technique to help the problems at high temps.
Can you imagine if they went to 3.6GHZ next year under 0.13m? It'd be over 100W, and very hot, and would probably throttle at minimum level.
On top of all this, Prescott has been delayed to Q4 2003, due to 0.09m tool problems. Given the fact Intel and AMD are supposedly getting the tools from the same company, it is obvious if one has problems, the other will too. AMD's 0.09m is coming in about 2 quarters after. So for now forget any high competition like the past few months. 800MHZ will be enough to keep the NWs competing for sure. That is also one way to allow the competition not to reach you despite slower speed ramping, since they will need to go up less than now, and still get very good performance increases, so being around 3.4GHZ before Prescott will be ok, no need for a 3.6GHZ+ CPU to compete AMD's.

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