It's not uncommon for computer manufacturers to swap and switch out various components for similar or near-identical parts during a production run, and Apple has been known to partake in this practice in the past. That being said, occasionally a manufacturer will use a part which has a slightly higher build quality or performance than its counterpart in other machines and simply throttle down the performance of the superior part through firmware.

Although some of the new Mac Pro towers ship with the familiar Pioneer DVR-111D optical drive, the majority of the systems contain the apparently non-existent Sony DW-D150A. I say non-existent because the ubergeeks over at HardMac noticed that DW-D150A isn't a recognized Sony model number. After some more thorough research, it came to light that the drives billed as Sony DW-D150A are in actuality NEC 4570 mechanisms. You're probably asking yourself right about now why on earth I'm going on about something as innocuous as differing model numbers, and in most cases, you'd be right to question my sanity. However, in this rare instance, I have reached through the haze of confusion that normally clouds my mind, and at least for now I have a firm grip on the real world. The significance is this:

The NEC 4570 kicks the pants off the Sony DW-D150A in almost all aspects of reading and writing, and has some extra features to boot.

Sony:
- DVD -/+R 16x
- DVD+R DL 8x
- DVD+RW 8x
- DVD-RW 6x
- CD-RW 32X
- CD-R 32X

NEC:
- DVD -/+R 16x
- DVD-R/ DL 8x
- DVD+RW 8x
- DVD-RW 6x
- DVD-RAM 5x
- CD-RW 32x
- CD-R 48x

Naturally, Apple has locked down the specifications of the NEC 4570 to keep things fair, but that doesn't mean we can't do a bit of hacking and regain all that sweet sweet performance. A few simple commands in the terminal, some pixie dust, and a little bit of luck, and you've got yourself one speedy optical drive.

Disclaimer, Disclaimer, Disclaimer: Needless to say (but I'll say it anyway) this hack is totally unsupported by Apple, and there is no guarantee you won't brick your SuperDrive. Attempt at your own risk.

Engadget HD linked a theory from Robert X. Cringely as to why Apple hasn't included Blu-ray drives in any of their Macs yet (it isn't even an option in the Mac Pro), despite being on the board of the Blu-ray Disc Association. Mr. Cringely more or less links the lack of Blu-ray in Macs to movies and Apple's strategy with downloadable iTS content and the upcoming iTV. The thinking goes: if Apple can sell you a downloadable movie through the iTS and an iTV on which to watch it - why undercut that model with a Blu-ray drive built right into the machine?

I disagree. There's plenty of other uses and potential (heck, they can hold up to 50GB) in these warring next generation optical formats (Blu-ray and their mortal enemy, HD-DVD), and that's exactly the point: these formats are in the middle of an industry polarizing war, and I think Apple hasn't committed to including either in their machines because they don't want risk leaving their customers high and dry once the dust settles and (dear lord, finally) one format wins out. The iTS/movie downloads/iTV theory doesn't hold water in my book also because that would mean they should eliminate CD and DVD drives from their machines - after all, those drives can undercut their iTunes Store music and movie purchases, right? These discs can hold a lot more than simple movies.

This ridiculous Blu-ray/HD-DVD situation is Betamax vs. VHS all over again, and while Apple is known for pushing the envelope on which technologies they adopt, I believe they're simply waiting for an actual standard to emerge. The only question is when these camps are going to get over themselves and stop forcing consumers to stock up on Advil for every trip to the electronics store.