Q:

Is Apple G5 Mac powerful enough to do Iphone Game Development on?

1.6ghz,
1.5GB RAM
FX5200 Geforce
I'm also assuming I can plug in any monitor I want?
Cheers!

A:

No, because you need a Intel based Mac to do iPhone development on.
At least, with the stock developer kit - I see blog articles from a few years ago talking about how to patch the iPhone SDK to enable a PPC (aka: G5) build machine... but I don't know if those work with iOS 4.x SDKs.
And even if you did patch the SDK, XCode 4.0 only runs on Intel machines (at least according to Wikipedia)

A:

Yes, I would image it is, but the iPhone SDK will only run on an Intel-based Mac. Specifically, the iPhone simulator and other iPhone specific tools are Intel-only applications. The actual APIs of the SDK should work fine on an older PPC Mac, but you won't be able to compile your code.

