Okay, I've read a large portion of this thread and I wanted to make a few points about this whole thing.
1. Calm down. Processors are not what they used to be a computer. A lot of the hardest work our computers do anymore is offloaded to some other subsystem. 3D and video come to mind. Changing out the processor really isn't that big of a deal, especially for Apple.
2. For those you screaming about "dual boot" Windows and Mac machines, dream on. The processor != the computer. These machines might be running Intel procs but the chipset, BIOS and a number of other things will probably change.
3. On that note, for those of you that think we might see more programs from the Windows world come over to Apple (games come to mind), dream on. It's "easy" to translate binary (like "Rosetta" or even back in the day when Alphas used "FX!32" to run WinNT programs compiled for Intel boxes). The harder part is dealing with differing APIs. Until there is a DirectX compatibility layer or an identical API for OS X, don't plan on too many programs coming Apple's way from the Windows world.
4. However, programs like VMware and things like WINE may have a shot at running on these new Apples. Low level stuff. This could be a good thing. This is speculation on my part.
5. One word: PCIe. This is a *good* thing.
6. For those of you whining about having "just bought" a G5, stop whining. The computer didn't get slower. It didn't change. It works. It's not going to be any slower or faster tomorrow than it is today. You had no problem paying for it yesterday, why should today be any different? Thought I'm not positive, I'm pretty sure we'll see "fat binaries" for a while. It's not like Apple is just going to dump the people who buy the G5s that are the generation JUST PRIOR to their x86 replacements.
"Rosetta" is there so the new x86 machines can run older, possibly unsupported or undeveloped software and software that hasn't made the transition yet. Some people asked, "What about the PPC people?" The software is ALEADY THERE for the PPC and during the years of transition we're likely to see fat binaries that run on both. Your G5 will run software made for the next few years. Likely Apple will support them longer than the aging architecture will. Seriously, no big deal. The newest OS X isn't supposed to run on a G3, you know? Time will kill the G5s. It's the nature of the beast in the computer world.
They're already doing fat binaries! The G5 is 64-bit and the G4 is 32-bit. While a G5 can run the 32-bit software, a G4 cannot run the 64-bit stuff. So, some binaries contain the compiled stuff for both.
Furthermore, so far as I understand it it's the laptops that'll see these new procs first. Your Power Macs are still nice. If you paid X number of dollars for them yesterday and were happy, you still should be. The G4/G5 resell values might drop, but I doubt it'll happen too much. The computers aren't getting any weaker. The software will still be available.
7. All the "evil empire" nay-sayers, are you people insane!? IBM was *the* evil empire and had a tighter stranglehold on the PC world than Microsoft and Intel combined back in the early days. It's not like Apple is replacing some kind, benevolent company with a dictator. We're just switching from one blood sucking corporation to another. I'll take the latter simply because supply won't be an issue again for Apple. Intel covers multiple markets and as such their processors will continue to develop without Apple having to push.
8. Microsoft has nothing to do with Intel. All references to Bill Gates are pointless.
9. Viruses!? Spyware!? These have NOTHING to do with a processor shift. Those are Windows problems and NOT Intel problems. My laptop (a 1GHz Pentium III running Gentoo Linux) has not virus problems. Why? It's not running *Windows.*
10. Apple is a company. Making money is what they do. I think some of us idolize them a little too much because they seem like the "opposition to Microsoft." This is a double edged sword in that sometimes ideals give way to money and market BUT it also means that if Apple wants to STAY in business they're not going to commit suicide. Business-wise this is a GREAT move. It's gonna be bumpy during the transition, but no more bumpy them supply problems and processor suppliers dragging their feet.
11. Finally, Apple is a PLATFORM. Most of us are using it because of OS X, not because we love G4s or G5s. Apple has an image they have to maintain if they want to stay in business. Intel or IBM inside, the machines will continue to be stylish, sleek and "just work."
12. Don't get your hopes up about building your own Apple from off thhe shelf components. Nothing, aside from binary compatibility and a processor, is going to change. Nothing.
13. One more thing, while I think about it. Initially, I wondered, "Why not AMD?" I mean, if you're going to x86, they have the upper hand technology-wise right now. (That and I run AMD in most of my PCs.) Intel is seady as a rock and AMD can be up and down. One more thing, it's not all about speed, it's about supply. Intel is huge. Intel isn't going anywhere. Going with AMD wouldn't solve a lot of Apple's other worries outside of speed.
14. PC fanboys have nothing to brag about after this. Neither side can try to pass their hardware off as "faster." It won't matter. It'll be PURELY about the user experience now and I think that will help Apple, not hurt them. Hell, they're already running the same video subsystems as PCs. They run SATA, PCI, DDR SDRAM, etc. Not Apples will have the same speed and ALL of the refinement. How is this a bad thing?
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That's what I've got to say on the matter. I'm still going to get a 12" PowerBook in a month or two. I'm actually hoping the resell value drops so I can score a relatively new one for cheap. Doubtful, but it'd be nice.
While I don't see this happening, I'm hoping there is no "Intel Inside" sticker showing. Ironically, out of all this... that's my biggest worry/peeve.