Mac Os X Tiger And Music Production Options

[xtr3mist]

i have a dual 1.8 g5 with 1.24 megs of ram. the two main programs i use are reason 3 and live 4. when i bought this system i never thought i would be having performance issues. my older g4 seems to have given me better performance back in the day. when rewire is on it can slow down so much when both programs start to add in more complex sounds to the point of not even being able to make the damn song anymore with how choppy it can get. forcing me to make changes and tweaks blindly, exporting, then listening to the audio file. i really want a different solution to this. i've heard that other mac os's run faster, but i really have no idea what to do. i'm willing to buy more memory but im finding this ridiculous