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I have a few old and reliable G3 and my G4 powerbook to help me with my Classic *fix* but honestly I've played around with Apple's new gear at their Store and it's so zippy compared to anything I have PC or Mac.

 

I just thought that I can get a cheaper system (on the used circuit) that is somewhat reliable for a few more years but it sounds like the G5's have a leaky cooling system problem that you can't predict. Plus Intels allow dual boot, and with today's newer systems, using Virtualization software is pretty reliable (even for games, but I'm not a big gamer). My only issue is mostly software compatibility with windows-only software (from work, certain statistics documents and such).

 

I've been drooling over the quad Core G5 towers that can be got relatively cheaply (compared to Xeon Mac Pro towers) but the benchmarks I've seen just goes to show that Intel+Leopard are a good pairing. Too bad they are way out of my price range, but I'm keeping my radars out for good deals. Thanks for the advice!

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Well not all G5s are liquid cooled, basically if its clock speed is 1.6, 1.8 or 2.0, regardless of processor count, its air-cooled and thus has no chance of spontaneous combustion. All of the air-cooled G5's at my old place of business are still alive and kicking and performing their duties just fine.

 

Its just that you can get a used Intel mac for around the same price as a decent G5 and even the oldest Intels are still much faster than everything but the very fastest G5's. Case in point, according to the Geekbench 2 scores in MacTracker, the first-generation 1.83GHz MacBook Pro (thats the Yonah based model), is only slower than the Quad-G5, a machine that still goes for quite a bit on eBay. It even out-paces the dual 2.7 behemoth. And as I mentioned earlier, there is no guarantee that Apple will continue to support G5's, or the PPC platform at all, for very much longer. Steve is not a fan of looking backwards. It is definitely a shaft to people who have invested alot into their PPC machines, but as a potential buyer of a "new" machine it would be beneficial to just get the newer technology and avoid that mess.

 

There were also two different types of cooling units, one by Panasonic and one by...somebody else, i forget who, the one by Panasonic actually works brilliantly and has a much lower failure rate than the other. Everytime you hear about a G5 catching fire or leaking, its one of the earlier, crappier designs with the O-rings i mentioned earlier.

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  • 2 weeks later...
Not even all the G4's could boot into OS9 directly, you just had classic support under OSX.

 

I think the last gen MDD were the non OS 9.

 

The Mirror Door Drive G4s spanned the boots-OS9/Doesn't-boot-OS9 transition.

 

If a MDD machine has a 800 Mbps Firewire port, then it will not boot OS9.

 

If a MDD machine lacks the 800 Mbps Firewire port then it will boot OS9.

 

However, getting the machines to run OS9 properly can be a challenge. There's a ROM file which needs to be in the system folder and if you don't have an original set of system disks it can be a pain getting things configured properly. If you do have an original set of disks, apparently it can still be a pain.

 

I have an MDD running Tiger 4.11 which will boot into OS9 but which won't run QuickTime for some reason. I can't remember if it crashes on boot if QT tries to load or if it just complains. I need to revisit it and fix things up.

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There were also two different types of cooling units, one by Panasonic and one by...somebody else, i forget who, the one by Panasonic actually works brilliantly and has a much lower failure rate than the other. Everytime you hear about a G5 catching fire or leaking, its one of the earlier, crappier designs with the O-rings i mentioned earlier.

 

I believe the other one is Delphi.

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