I've seen a lot of people on the forums complain about that it's Mac Pro or bust in terms of expandability and I was wondering for those who decide that they must have one, what makes it necessary for you and how have you used its unique features in the Mac line-up?
For example, what use do you have for the PCIe slots?
Why do you need so much storage?
Are dual-displays not just a luxury?
I thought it would be interesting to find out how the power users in this community make use of their machines.
I don't have a Mac Pro - in fact I don't even have a G5, but use a Power Mac G4 and PowerBook G4. However, my next machine will likely be a Mac Pro, for the following reasons:
Storage - I've found that, between my music library, iPhoto library, backups of my DVD collection, games and general backups I use lots of space. I also have a PC that I would like to phase out in favor of an Intel Mac running OSX, Windows and Linux. All this requires a couple hard drives for best performance. I would also like to experiment with RAID for a more reliable storage system. External solutions work well, but I prefer an internal solution, which requires the Mac Pro's capacious innards.
Games - I don't play more than once or twice a week, but, given the choice, I'd like to play at then highest res/framerate possible. Plus I have a 20" LCD and may not get rid of it right away when a new machine arrives, so a dual display card that offers high performance for games is high on my priority list. The iMac with the GeForce 7600GT is impressive, but in 4 years it won't be, and in 4 years I'll still want to play newer games with my 4 year old Mac...being able to replace the GPU is important to me.
Professional Software - Coming up in about a year I will need to start running a GIS software suite that is Windows only and stresses our computers at work (Athlon 64s w/2GB RAM) pretty hard. The beefier the system the better. This GIS suite will also require me to make use of Photoshop and Illustrator. After watching the performance of the Athlon 64s I decided that a Mac Pro would be the best machine for this software.
Longevity - I'm a bit of a tinkerer and like to keep my Macs for 6 years or so, and don't mind pumping money into upgrades to keep my machines as current as I can. My current desktop is 6 years old and has had its CPU, RAM, video card, hard drives, display and optical drive upgraded, in addition to a USB 2.0 PCI card. Having the PCI slots means that you can make use of a new interface standard if one is released after you buy the computer.