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Just for comparison.
Okay, Imma make up a chart here: I need some major stuff, like support for 4 displays, and I'm ever expanding my setup.
G5:
Support for up to 8 displays: Yep
Native Optical Audio in and out: Yes
Dual Gigabit ethernet (which i need): Yes
Hard drive expandability: Yes
Easy to upgrade major components and not just RAM: Yes
Support for fiber channel: Yes
Supports all the software I need and want: Yes
Superdrive (which I actually use, ALOT): Yes
Security Lock, so I can bolt it to the rafters of my house like all my PC's are: Yes!!!
Firewire400: Yes
Mini:
Support for up to 8 displays: Nope. Just two, and two displays, really doesn't cut it for my workflow.
Native Optical Audio in and out: Hi there, TOSlink.
Dual Gigabit ethernet (which i need): No, however thunderbolt options are available.
Hard drive expandability: No.
Easy to upgrade major components and not just RAM: No.
Support for fiber channel: No, thunderbolt.
Supports all the software I need and want: Yes
Superdrive (which I actually use, ALOT): Nope, £80 please.
Security Lock, so I can bolt it to the rafters of my house like all my PC's are: Nah, who wants to lock their hardware down?
Firewire400: Nope
Okay, so the mini can do all the stuff I NEED it to, but now how I want it to, and the G5 fulfills that nicely, I know you were just putting that there for reference but I prefer to have a proper workstation, supporting everything I need and want natively.
All that geekbench truly does is measures the performance of your CPU and ram.
And here is how the G5 does: