A reader recently asked me a question I have been asked several times before via email. The question is usually somewhere along the line of "since Power Macs (pro towers) are the most reliable Macs, can you please list the specific ones that are best".
First off... "best" can be different with different people, as it depends on personal need as much as anything. That is something which is obviously a bit different with everyone. For myself, reliability is paramount, and more important than performance. For many users though, that is not the case. Not that reliability isn't important to these people, but rather that performance with the stock CPU might be more important.
As I mention in my Why the Sawtooth is the greatest Mac ever made post from 2012, the Sawtooth is the most reliable, but every Power Mac tower made from February 1997 - July 2002 has a level of reliability that every Mac before or since has lacked.
For people who don't want to buy CPU upgrades, the Sawtooth isn't as good of a choice. The stock CPU's range from 350-500MHz singles. If you want more ready to go power, then the later Power Mac systems are the way to go.
If you're one of the loyal 8600/9600 luddites, then you have some of the most vast expandability in this group. Sporting 6 PCI slots, a 1.5GB RAM capacity (double the newer beige G3), and the early stages of the easy open cases Apple became known for, the 9600 is a true beast. The 8600 holds 1GB RAM, and has 3 PCI. If you do things that can still be done on a 604 CPU, these are a very good choice. Many of them also have G3 and G4 upgrades, but via a PCI based CPU socket. Not the onboard socket, as it cannot fit a G3/G4. The 8600/9600 towers are also about the biggest Apple towers ever made. The G5 towers are about 2" taller, but that includes the handles, and the 8600/9600 are wider/bulkier.
For doing more modern or internet based tasks, it would be best to stick with the AGP equipped G4 towers, which only excludes the Yikes. The Sawtooth and up also have a much faster memory controller. The 8600 through to the Yikes move the RAM at speeds ranging from 50-280MB/sec, compared to 500MB-1GB+/sec for the AGP fitted G4's.
This is a list of all the truly reliable Power Mac towers (in chronological order):
- Power Mac 8600
- Power Mac 9600
- Power Mac G3 Beige
- Power Mac G3 Blue & White
- Power Mac G4 Yikes (PCI Graphics)
- Power Mac G4 Sawtooth (AGP Graphics)
- Power Mac G4 Mystic (Gigabit Ethernet)
- Power Mac G4 Tangent (Digital Audio)
- Power Mac G4 Titan (Quicksilver)
The nine systems listed above give the ultimate combination of reliability and expandability. They are virtually immortal.
There is no Power Mac G4 MDD or any G5 tower in the mix, because they both don't deserve to be in the same company as the above systems, unless you're a fan of your hardware having a good chance of potentially being dead one day. The MDD ranges from 2-11x in how many times less reliable than all the above systems, and the G5's range from being 10-30x less reliable. No joke. I'm a certified Mac tech (and have been since before any of these towers were ever made), and know exactly what I'm talking about.
If you need as much performance as possible; without a CPU upgrade, along with reliability, then a dual 1.0GHz Quicksilver would be the best choice.
If you're like me and want reliability first, but still have good performance; a heavily upgraded Sawtooth is the way to go. You also get an extra 512MB memory capacity with the Sawtooth vs. the Quicksilver and Digital Audio. I have invested well over $1000 in upgrades on my main Sawtooth, so be sure this is what you want first.
Please direct any other questions related to this in the comments here. That way everyone gets to read it, and read my answers.