Not having to spin means faster read/write times. Remember what I said about RPMs above? The solid state drive circumvent this problem because there's nothing to spin. Something like writing m-a-s-s-i-v-e files is slower, but 90% of the time, they're faster. This is a 2.5' drive, which is the standard size for laptops and some compact desktops (i.e. The physical dimensions of the drive mean the difference between one that fits and one that doesn't. Lastly and most importantly, size matters. There's more to speed equation, but this is 99% of what we need to know. That means data is read faster and writes faster. My stock Apple HDD was 5400rpm (revolutions per minute). The other thing you may know about is speed.

A larger drive will be faster than a small cluttered one.

Why? Because your computer uses, even though you're not using explicitly. My stock drive was 80gb and I knew I needed more. Look kids, there are reletively few things you need to know about HDD. Over the past few years, it had grown fragmented, was getting rather full and things were slowing down. I suffered with the small, slow stock hard disk drive (HDD) in my Macbook. Looking to upgrade your Macbook or Macbook Pro? Once, I was just like you. Seagate 7200.4 ST9500420AS 500GB SATA Laptop Hard Drive