Rebuttal: 32-bit vs. 64-bit
I apologize to everyone in advance. There were some comments made about 32-bit vs. 64-bit hardware, and a few assumptions about operating systems and applications, and I felt I had to reply. Embedded in the middle is an admission that the OP is probably best off sticking with 32-bit hardware because the Windows OS that will be pre-installed can't handle 64-bit hardware anyway (sigh).
If you're not interested in my diatribe, skip to the next message.
drothgery said:
Why buy a Core Duo notebook? Well, because you can get them now, from Dell (this may matter if you're getting things for work or through a university discount program) or Apple (many people swear by OSX, or just like Apple's designs),
The ad I mentioned describes dual core AMDs that can also be gotten "now".
Concerning Dell, my wife just bought a dual-core desktop from them last Christmas. I'm not happy with the number of calls she has had to make to India. (Yes, it's a U.S. number, but you know what I mean.) She's not happy, either.
First, the USB ports on her Dell monitor will not work with the Dell mouse or Dell keyboard. If any of those devices (or her iPod) are plugged into the monitor's USB ports, the machine will not finish the BIOS boot cycle. Period.
If we wait until the machine is up and running, then plug the USB devices in, they will work for some random, undetermined amount of time, and then the machine will BSoD. (This is Windows Media Center, fully patched.)
Media Center is also to fault for some weird performance problems, IMO. Her Outlook client started running terribly slow. After spending 1.5 hours on the phone with Dell, they had her reinstall Outlook and reboot. What do you know, it suddenly speeds up!? (Wtf?) A similar situation happened with Adobe Acrobat Professional 6.0 about 3 months ago; reinstall, reboot, and the problem is gone...
I'm sorry, but with that kind of support, I'll take my chances running a true 64-bit operating system on true 64-bit hardware and STAY AWAY FROM DELL! In fact, it has gotten so bad (and she and I have had some arguments over this), that I refuse to support her when it comes to her Dell. (I am in the industry as a trainer. I teach everything from Intro to Linux up to Internals and Writing Device Drivers. I'm no slouch.

)
Lenovo has announced that they will start putting AMD chips into their laptops, and in fact, they will start pre-installing SUSE Linux for those customers that want it. I don't recall the start date for those two announcements, and when I checked the IBM sales site I couldn't find mention of it, either.
they offer the best performance in most 32-bit apps, and it's unlikely that much desktop software is going to be 64-bit only (or even 64 bit at all) in the next 3 years or so.
Huh? You must be stuck indoors all the time, locked behind closed Windows, eh?
There has been 64-bit hardware out for 3 years now. Every machine in my office (I count 4 of them) is running 100% 64-bit software (except for the Java runtime, because Sun won't release a 64-bit Java for Linux -- argh!).
And 64-bit rocks over 32-bit. A world of difference, not so much because of the instruction size/set, but because RAM can be managed so much more efficiently. Take a look over at
top500.org and check out what operating system the top 500 supercomputers are running. Last I looked (March), 7 of the top 10 were running a Linux distribution. In fact, 72% of the entire top 500 were running Linux. Windows had about 1.4% of the top 500.
Now I ask you: if you want to get
WORK done, which operating system would you trust? If you just want to futz around with games and become a spam zombie for some Russian script kiddie, stick to Windows.
To be fair, though, the original poster said he wanted a powerful laptop to play games (sigh). I assume he means under Windows, of course. So the conclusion might as well be a 32-bit chip, since Windows isn't going to do much better on 64-bit hardware anyway. But if you want to plan ahead a little bit...
AMD's largely a non-factor in notebooks; they're pretty common in low-end retail channel PCs, but they're non-existent in business-targetted machines and scarce in higher-end systems. Pentium M and Core Duo, despite not being 64-bit, have kept up with Athlon 64 far better than Pentium 4 and Pentium D did.
Huh? So I should buy a P-M or Core Duo because they doesn't fare as badly against the 64-bit AMD as their predecessors? I'm sorry, but that's not useful logic to me.
The Turion TL-50 (dual core 64-bit chip) is available from Compaq (and now Acer and Toshiba) and backed by HP's support. I wouldn't rate their support 100%, but they are better than most that I've had to deal with. And if you study how the memory fetch cycle works on Intel chips vs. AMD chips, you'll find that AMD's HyperTransport technology can get data from RAM to the cpu about 40% faster in a dual core configuration than Intel's so-called "front-side bus". And the HT technology scales reasonably well up to 8 processors. Of course, Intel VP of Marketing recently said that he doesn't see multi-core becoming popular for the home desktop. And I agree -- for the people who read email and surf the web. But I
want a quad-core configuration at home, and AMD expects to ship one by the end of the year! (In combination with motherboards by Tysan and MSI, IIRC.)
What's keeping me out of the market right now is that my current Athlon64 laptop (1GB RAM, 2GHz chip, 802.11a/b/g, and nVidia GeForce w/ 64MB) has a 17" widescreen display with 1920x1200 resolution at 16 million colors and I can't find anything new that comes close to that resolution. The best I can find is 1600x1080 widescreen at 15". Of course, I also spent $2500 on it in Aug 2004 and I'd spend another $2500 this year, if only I could find what I want... :\