Drive Replacement - 4200rpm vs 5400rpm

[Richard J Laue]

Hi, All -

The hard drive in my 600mhz iBook just bit the dust.  Fortunately, I 
have a bootable back-up external drive, so I'm not totally dead in 
the water!

I'm getting ready to order a replacement drive, and need to choose 
between a 4200rpm vs 5400rpm drive.

My question:  Is this particular iBook (600mhz) fast enough to 
benefit from the faster drive, or am I just throwing money away?

Many thanks -
RJLaue