What matters more? Drive RPM or cache?

Durbrow

Registered
I am replacing a 5400 rpm 8MB cache with a 7200 rpm 16MB cache drive. I was curious whether perceptible speed improvement is more due to rpm speed or the size of the drive cache? Any ideas?
 
For all practicality, both. A larger cache will speed up frequent and small file access times, while a higher rotational speed will decrease the latency of drive access overall.

In general, things like the time it takes to boot the machine, launch applications and read/write large amounts of data will be most impacted by the rotational speed of the drive. Real-world use like random access times and reading/writing small amounts of data will be most impacted by the cache size.
 
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