This is so wrong on so many levels......
Extravagant??? Do you know what that word means? Because the context you use it in makes no sense.
Actually, the context I used it in makes exact sense. "Spending more than needed" is a general definition; for 90% of Mac workstation users, buying a top tier Mac Pro is extravagant. It doesn't mean they don't
want it, mind.
😉
Don't forget that you are posting in the Mac Pro forum and not one of the consumer-grade Mac forums.
Let's assume for a moment that I have a 2009 Mac Pro because I need the horsepower. Seven years from now when the Mac Pro has 8 or more times the horsepower that the current Mac Pro has, what makes you think that the 2009 Mac Pro would be adequate for my needs? What makes you think that the latest software of 2017 is going to run just fine on the current hardware?
Well, for starters I don't know what you do so I don't know if you'd need an octo-xeon, but if you do and you're maxxing it out now, then of course not. But that doesn't mean EVERYONE with needs for above-consumer grade machines has those same needs. For me, I need a tower mostly due to file transfer and storage requirements, as well as additional hardware. For this reason, my 2003 G5 still functions to my needs. It started showing its age THIS year (year 6), and will last another 1-2 years for what I need. One example. Most people fall towards the middle--the current Mac Pros will work fine for them but they are probably not completely taxing their systems, and will probably be ok with it for 2-4 years, possibly longer. They are not "need" people, and "need" people are probably upgrading every year.
So to answer your question, I don't think that a 2009 Mac Pro will or will not meet your requirements in 2017 because I have no idea what your needs are. And I can't compare 8 years, but I CAN tell you that all the pro-grade software I use still works on 6-year old hardware, if a little slower than its previous versions...
I have never in my life found 7 year old computer hardware to be adquate for my needs. Why should that change now? I am not your friend using the Pismo. I can guarantee that in 2017, I will find the 2017 Mac Pro (or whatever the top of line system is called then) more useful than a 2009 Mac Pro.
Right, but I think you're missing the point of my post. Your needs are not mine, my friend's, or anyone else's. Needing a workstation doesn't mean you always need top of the line, and again the point was that Moore's Law isn't particularly applicable, as again it applies to the advance of chips/transistors, not of usability. Hell, the market doesn't even really reflect Moore's Law; in practical terms it applies a lot more to R&D, which is almost always 2-4 years ahead minimum of the market...