Originally Posted by Kuiper
It's worth noting that the 2TB F4 is a 3-platter drive, resulting in higher platter density, which improves read/write speeds. There are many factors besides RPM that impact hard drive performance, and the 2TB F4 actually outperforms many smaller 7200 RPM drives.
Originally Posted by ukic
I was trying to point it out to someone who mentioned that the greens were also 5400rpm's... ty for info, but I already know.
But it's worth noting that this doesn't apply when barely any of the drive is in use.
For example, if a person only uses 40GB of space, the highest RPM will win. It's when between ~15-50% of a drive is in use that the difference in seek distance somewhat makes up for the RPM.
A 2TB 5400RPM drive seeking half-way into the platter may match a 1TB 7200RPM drive seeking to the end of the platter when it comes to seek times. Add in higher sequential speeds, and the slower drive will feel faster some of the time.
But if all your data is crammed into the first part of the drive, any drive at all will be able to jump tracks to the next file quite rapidly. In that case, the lower RPM just increases the time before the head is over the right part of the platter.
I usually suggest that people get drives far bigger than they need, to keep seek distance low and maintain high performance. If you use 300GB of space, you don't need a 500GB drive... you need a 1TB or 2TB drive.