First you have to understand how important is the hard diskís
performance in relation to the other components of a computer.
Remember that compared to your processor and memory, the hard drive
functions mechanically. Thus, itís response time is relatively much slower
than these other components. But since most processes take place in
the CPU, very often the hard drive is neglected as a contributory performance factor.
best understand the overall impact of the hard driveís performance, I suggest
you read these PCGuide articles about Hard
Disk Performance and the Importance
of Hard Disk Performance.
To help you decide whether you need an upgrade or
not, you have to identify whether most of your processes are I/O bound Ė when
a lot of read and write instructions to the hard drive is required. If so, then
upgrading your hard drive is a very good option to improve your systemís