TldToday has discovered in the recently released Macbook Airs speed is not consistent among SSDs. While running tests, TldToday found that the 128GB Samsung SSD in the 11-inch MacBookAir scored 246 MB/s write and 264 MB/s read speeds, but when he switched to the 13-inch model speeds dropped to 156 MB/s and 208 MB/s using a 128GB Toshiba SSD. Engadget ran similar tests and confirmed Tld’s findings. In the video above you can find how to check if your MBA has the faster Samsung, or the slower Toshiba. Let us know if you see speed differences in normal usage.