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Intel Inside/IBM out of picture
Authored by: Shawn Parr on Jun 07, '05 04:22:31PM

Just because you don't have to deal with IRQ's doesn't mean they don't exist on the Mac.

IRQ's are used for different parts of hardware (and software) to talk to each other.

On the Mac Open Firmware and the Mac OS work together to make this all transparent. I would expect that under the Mac with Intel design they would still be able to handle this. Even though OF will not be used according to the documents so far released. Even XP does a pretty good job of you not having to ever set an IRQ, some people may run across it, but most do not.

Also a lot of people don't seem to understand the timeframe we are looking at. Within 12 months even portable Intel chips could all be 64 bit. We are also probably not really looking at P4 for actual released machines, but something based on Pentium M and Pentium D designs. PD is 64 bit, and Pentium M is amazingly efficient for its power use and low heat output (a 2Ghz easily outperforms a 3.6Ghz P4 in Intel's own demos).

Yes I know that the current developer kit is a P4, but that is the _current_ kit, not what will ship in 12-18 months. That is a couple revisions of machines in computer lifetime.

I am interested to see what will happen with the PM and PD lines now, especially in the way of vector optimization, as that is the one area where the PPC truly rules. Other areas (memory bandwidth, etc) could easily catch up in that time frame.



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Intel Inside/IBM out of picture
Authored by: chris_on_hints on Jun 08, '05 06:51:23AM

Steve even said in the description of the P4 boxes that he was selling to the developers that they were only to aid in the transition, and would be nothing like what will be the first IntelMac...

... I take that to mean that the IntelMacs will NOT be running pentiums, which are far hotter and run at higher clock speed than the newer chips Intel makes, and the AMD ones.

...I am hoping to see a nice 64-bit Intel processor in the Mac mini and then in the powerbooks.



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