The Micron RealSSD C400 packs 64 GB of storage capacity. It can read 500MB/s and write 95 MB/s — all in a tiny 1.8" form factor.

Digging a little deeper, we find that a Marvell 88SS9174 SSD processor is keeping all those Micron flash ICs running smoothly.

PSA: The Windows 8 operating system chows down a fair chunk of the 64 GB total storage. After negating 30+ GB for the operating system, the full MS Office suite that you may not have even activated, as well as the factory restore image, the Surface Pro provides users with around 29 GB of usable space.

128 GB-outfitted owners make do with 89 GB of free space. Ed Bott performed some tests comparing it to the 128 GB MacBook Air, which has 99.5 GB free space.