They're all linked I'm not harddrive expert but generally the faster a media spin, the faster the data pickup. eg. 52x cdrom drives spin much faster than a 30x one and transfer data at a faster rate. With a faster rotation speed, average seek time will generally be shorter too (of course the disk read/write heads must be able to work fast enough).Originally posted by Nutcase
But I thought that is represented by the media transfer rate (ie how fast data can be transfered from the media to the disc interface...
and this is represented by the average seek time (ie how faster the head moves from one sector to another within the disc.
If the 2 parameters we are looking at is true, then it appears that the value is the same for both 4200/5400rpm drives.
The articles below probably explain much more than what I could in simple paragraphs:
There're articles which explain how a harddrive works too. It may aid in the understanding why spinning faster result in better transfer performance.
Read it and come back with more questions