Question: I use HD Tune to measure performance of the hard drive. ?The tests typically take 2-3 minutes and the transfer rate of a regular hard drive decreases dramatically as the test comes to a close.
However, the SSD drive performance stays the same over (pic below) the life of the test. ?This happens on all my computers. ?Why is that?
Answer: The mechanical HD is being scanned from the outside inward. Since the disk is spinning at a constant 7200rpm, it’s covering more data per second at the outside than the inside.