主题：【原创】说说苹果转向英特尔这件事 -- Highway

今天在Apple开发者大会上，Apple总裁Jobs正式发布了这一消息。我看了看它的讲话，在这里把要点给大家摘录一下。

1)Apple转向Intel是预谋已久的。在过去5年间，Apple的操作系统一直都是在PowerPC和Intel平台上同时编译的。所以在今天宣布这一消息的时候，Jobs就展示了运行在Intel Pentium 4上的Apple OS X.

2)Apple转向Intel的主要原因是对于Intel今后的处理器在性能和能耗上更有信心。按照Jobs的说法，2006年中期开始，PowerPC每瓦功耗只能提供15个单位（?)的计算能力，而Intel却可以提供70个单位的计算能力。这意味着同等功耗下,Intel性能更好；同等性能下,Intel更省电。

3）转化从明年中期开始，到2007年底结束。Intel-based的苹果电脑可以使用Rosetta软件运行以前为PowerPC编写的程序。并且从现在起，Mac的程序开发员要使用Xcode。这种开发工具可以编译生成universal binary code。这种code可以运行在两种平台之上。

就目前我看到的用户反应，似乎还没有看到一个开心的。有的发誓今生今世再也不用Apple了，有的则已经给Apple立了墓碑。

The rumors are true: Intel will be inside

Jobs talked about the major transitions in the Mac’s life ― starting from the Mac’s Motorola 68000-series processor to PowerPC. “The PowerPC set Apple up fro the next decade. It was a good move,” he said.

“The second transition was even better ― the transition from Mac OS 9 to Mac OS X that we just did,” he continued. “This was a brain transplant. And even though these operating systems (9 and x) vary only by one in name, they are very different, and this has set Apple up for the next 20 years.”

As the Intel logo lowered on the stage screen, Jobs said, “We are going to make the transition from PowerPC to Intel processors, and we are going to do it for you now, and for our customers next year. Why? Because we want to be making the best computer for our customers looking forward.”

“I stood up here two years ago and promised you 3.0 GHz. I think a lot of you would like a G5 in your PowerBook, and we haven’t been able to deliver that to you,” said Jobs. “But as we look ahead, and though we’ve got great products now, and great PowerPC products still to come, we can envision great products we want to build, and we can’t envision how to build them with the current PowerPC roadmap,” said Jobs.

Intel processors provide more performance per watt than PowerPC processors do, said Jobs. “When we look at future roadmaps, mid-2006 and beyond, we see PoweRPC gives us 15 units of performance per watt, but Intel’s roadmap gives us 70. And so this tells us what we have to do,” he explained.

Transition to Intel by 2007, and yes, Marklar exists

“Starting next year, we will introduce Macs with Intel processors,” said Jobs. “This time next year, we plan to ship Macs with Intel processors. In two years, our plan is that the transition will be mostly complete, and will be complete by end of 2007.”

Jobs then confirmed a long-held belief that Apple was working on an Intel-compatible version of Mac OS X that some have termed “Marklar.”

Mac OS X has been “leading a secret double life” for the past five years, said Jobs. “So today for the first time, I can confirm the rumors that every release of Mac OS X has been compiled for PowerPC and Intel. This has been going on for the last five years.”

Jobs demonstrated a version of Mac OS X running on a 3.6GHz Pentium 4-processor equipped system, running a build of Mac OS X v10.4.1. He showed Dashboard widgets, Spotlight, iCal, Apple’s Mail, Safari and iPhoto all working on the Intel-based system. The system itself was not revealed.

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