it depends on more then rotational speed.
The Rotational speed and latency time is related as follows:
Latency time = (1/((Rotational Speed in RPM)/60)) * 0.5 * 1000 milli seconds
7200rpm
7200rpm will provide faster read and write speed.
Depending on your computer's BIOS, it might support or not a 7200RPM hard disk drive. Usually a Pentium 3 should support 7200RPM hard disks. I personally own a 800MHz Pentium 3 with a 160GB ATA hard drive and it worked without updating the BIOS(last updated in February 2000). So, a Pentium 3 should support newer hard drives but make sure your BIOS is at least from 1999 or 2000 since I don't think a 1995 or 1996 BIOS can handle a 7200RPM hard drive.
It depends on the make and model of the Hard Drive. Normally the spin speed does control how fast you can access a certain part of a track, but it also depends on how fast your seek time it. If you have poor seek time, your rotation speed doesnt mean anything.
Common current values are 5400 rpm, 7200 rpm, and 10000 rpm. However, these are not the only possible values.
Average latency
Access time
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access time
access time
access time
True A horses daily rotation is determend how hard it works .