I have two 500GB hard drives sitting around and I want to use one for my music drive in my computer.
One is a WD5000AAKS, which is 2.5 years old, and the other is a WD5000AAJS which is only 1 year old. The only difference between the drives is the cache, the older one being 16MB and the newer one being 8MB.
Is the bigger cache going to be of any benefit to me if all I'm using the drive for is playing mp3's and flac's from? I would like to use the 8MB drive because its newer, but would there be any noticeable difference because of the smaller cache?
Video and music files don't require very high transfer rates for playback - it won't make a bit of difference which drive you use. The only time you might start noticing a difference is if you time how long it takes to copy the files from one place to another.