Been a long time since I've delved into the PC processors (or cared about them) but in the limited way I was keeping track of those changes I do question why Apple chose Intel. Seems for the 32 bit consumer grade CPUs Intel is alright, but when we look at the 64 bit level processors I believe we get a different picture. AMD, unless something has changed drastically, is the de-facto standard here. AMD has set the x64 bit processor standard that Intel uses, AMD was the first to offer full 32 bit support on the CPU without the need of emulation (something that until recently Intel didn't do AFAIK), AMD scores higher in benchmarks with their 64 bit processors (both 64 and 32 bit processing), etc.
People are literally having physical reactions around here to the word "Merom" (I will pause while everyone cleans up the mess they made) when in fact the Merom chip seems to be bunk. Its hotter, its more power hungry, and if I had to offer advice to Apple I would tell them in the most emphatic terms that Merom (damn, gotta pause again) is not for them. The Core2Duo (what is that? No one ever uses Core2Duo to name the Mer...ahem) being hotter and less efficient than the Core Duos would be BAD to put in their products. Can you imagine a MacBook HOTTER than what you've got now? Even with the SMC update the MacBook is still pretty toasty, although now I can rest my hands on the keyboard without feeling the heat. And can you imagine a MacBook with even slightly degraded battery life? People would be up in arms decrying Apple and posting on this board that they were going to file lawsuits against Apple in hopes that the United States Attorney General would notice them.
The underlying thing I have been laying the foundation for is that Apple may have picked the right company for RIGHT NOW (as in, the nanosecond that they released the Intel iMac AMD wasn't as good as Intel), but I think they did it at the expensive of future proofing. 64 bit computing is the future, and you think those Xeon processors will fit in your Macbook (pro)? No chance. I know AMD has been working on their mobile offerings and they're getting pretty good. I don't know if they're 64 bit yet, but if they are then I begin to question Apple's decision.
I think its important to not get caught up in the Apple apologist / fanboi-ism surrounding the Intel move. I bought a Macbook, I love it and I'm glad I spent the money. I also had a G4 Mini and played around a few times with a G5 iMac. I know where Apple was and I know where it is now. We're so much better off with our move to x86 computing, but could we be better off with AMD? I think the answer is yes.
I'm not claiming my impressions are right, and if anyone can correct me I'd love to hear it.