I've purchased two versions of the 3.5" Icy Frame-mounted versions as well as this bare 2.5" version. I prefer the bare. I mounted this in a Silverstone dual-2.5" mounting tray (highly recommended, inexpensive). The Velociraptor is considerably faster and much cooler-running than the original Raptor. For some products I've purchased, one star is too many. For this Velociraptor, five stars are too few. It is fast - 7 ms overall access time compared with about 14 ms for a good 2.5" mobile drive like the 7,200-rpm Scorpio Black. Sustained data-transfer rate varies from 125 MB/sec at the outer cylinders to about 80 MB/sec on the innermost cylinders. Burst data rate is around 240 MB/sec. This is outstanding performance for a cool-running 2.5" drive. I purchased Raptors about four years ago and I thought they were the bees knees until this jewel came along. Its biggest shortcoming is the 12.5-mm depth (thickness), rather than 9-mm, so it can't fit all desired applications. Where it does fit, it's dynamite. Almost as good as SSD and less expensive, byte for byte.