Hey guys i own an iMac G5 2.1GHz, 1.5GB Ram. I am wondering how can i boost the performance of my machine. I have noticed that boot up takes a little while (53.76 seconds). I am not sure if there is anything you can do to boost the performance of an iMac this is my first Mac so i am new to all the performance boosts and stuff like that. So if there is anything i can do to make my iMac run a bit better and boot up faster please let me know. Thanks.