The smaller mSATA SSDs have been available for some time now, but many of you have probably wondered how useful they are. An increasing number of laptops will fit an mSATA SSD, such as the MSI GE60 laptop pictured below. Previously when you wanted to upgrade your laptop with an SSD, you had to remove the existing traditional hard drive, but now laptops will often have space for an mSATA SSD next to the hard drive. The new SSD can then be used for your operating system and software, and the original hard drive for storage.
Most Ultrabooks allow the same thing. Usually they have a small SSD for caching or hibernation purposes only, and by replacing it with a larger capacity drive you can put your OS and software on it. Certain Ultrabooks use a different format than mSATA called Gumsticks, but mSATA is by far the most common one.
Here we are comparing two mSATA SSDs, the Adata SX300 128GB and the Crucial m4 256GB. We will also find out whether this type of mSATA SSDs are as fast their 2.5-inch counterparts.