iBook hard drive upgrade question

[terriyaki]

I've got a 12" 1.33Ghz G4 with 1.5GB of RAM and a 4200rpm 60GB hard drive. I've noticed that it's not as speedy as it used to be. The only thing I can upgrade is the hard drive. Now, my question is this. Will I notice a significant speed increase if I upgrade to either a 5400rpm or 7200rpm drive or is the upgrade insignificant enough that I should just look to continue saving for a Macbook?

[one1]

Well if you're trying to hit macbook speeds forget it, but if you want to pep it up the HD is one of the better upgrades.

[squeeks]

good luck installing that harddrive, it takes about 56 steps, i attempted it with my ibook g3 and gave up on step 32

ibook replacement guide (http://www.ifixit.com/Guide/Mac/iBook-G4-14-Inch/Hard-Drive-Replacement/84/15/)