"SSDs offer different read and write speeds, form factors, and
capacity. I looked at several models from Mtron. The performance of
the 3.5-inch and 2.5-inch form factors is identical, so you might
as well get the 2.5-inch drive because you can use it inside
laptops as well as desktop machines. Mtron's Imation-branded drives
use the MOBI brand for lower-end "personal" drives and PRO branding
for the professional (faster) drive. The professional drive is
reported to be about 10% faster in write and 20% better in read
performance."