@Ethan Frost, he means SATA 3.0 (the type of connection needed), it is a 2.5" laptop hard drive. It will work in a PS3. Also, 7200 RPM (which is awesome for a laptop drive, the majority that are pre-installed in laptops are 5400 RPM)
Wish I knew the cache size on this drive. The 7200 RPM speed doesn't help much without a good size cache. Most laptop drives have 8mb, which will negate any speed improvement you get if the cache is that small.