<Bitching mode>
Apple recently seems to save on QA anyway, if you look at the (subjectively felt) increasing quality issues in their products...
</Bitching mode>
Unfortunately, there's truth to this (and not just Apple - it's become commonplace for consumer electronics as more and more devices are actually computers, even if their functionality is aimed at a specialized task).
In a number of cases, component selection is another area that suffers due to accounting depts in my experience (i.e. base selection on cost only, not performance).
Another part of the problem as I see it, is the back-end; poor QC on the assembly line (no random component testing before a lot is used in assembly, and no random full scale testing on final products off the line <just get a Go/No-Go form of testing and place a "QC Passed" sticker on it>).
It's quite possible that the MacPro goes ARM earlier than the iMac. Instead of putting two expensive (Xeon) CPU's in there (with up to 12-16 cores), they could as well implement a board with 8 inexpensive ARM quadcores. As they already purchase/produce ARM's (the Ax chips are based on ARM architecture) in huge quantities for the iOS devices, they could probably get really good prices for an even higher volume in order to support MacPro's (and probably in the long run also other machines like Mac mini, iMac, MacBooks etc.).
I'm not sure whether the performance of the ARM architecture is already there yet, but i'm convinced that this is being researched in the Apple labs (there also have been rumors in that direction some time ago).
Generally speaking, ARM is being used like this for servers (HP has announced such a system -
Redstone Project, but nothing is currently available yet).
It's also being examined for workstation use with GPU's for a GPGPU based solution (increases performance to workstation requirements). However, this requires that the software support this type of usage, which is a limiting factor ATM.
Q/A isn't a significant amount of the revenue the Mac Pro generates though. Even if Apple only sold 10k Mac Pros every year (which sounds very low), that's likely 10 million in profit. Is Apple spending 10 million on Mac Pro Q/A?
I'd bet good money there are only about a dozen people on the entire Mac Pro team.
If there was an issue, I would say it's a lack of caring on Apple's end, not profits. Or hardware quality.
For me, it's not the QA costs themselves, but fact the MP's sales volume is shrinking (negative growth), and how that reflects on the ROI.
This doesn't mean that the MP is currently unprofitable, but it will end up in a cycle of increasing MSRP and reduced sales until it reaches $0.00 profit, or worse, a loss if they continue (I don't see Apple continuing with the MP as a loss-leader product).
So it comes down to whether or not they want to play this game.
Given the ROI on the consumer products, I'm thinking they won't play it for long.
As per the number of developers, I'm not sure it even has full time personnel due to the Audio bug in 2009 (took nearly a year before the first fix release, and a couple of revisions before they finally solved it). This left me with the impression that they were pulled off of other projects during a brief break in those cycles. Assuming this is the approach they use for the MP, it could explain why the QA isn't that wonderful as those doing the development work aren't all that familiar with the product. Just a thought anyway...
