Scroll down to the CrystalDiskMark 4K test, it kills the 960 Pro with 307 MB/s compared to 62 MB/s read performance. Big transfers or deep queues? SSD better. Short burst of performance at low queue depths? Super quick. Write speed is not super impressive but assuming the primary goal is to read from slow storage and cache it's good enough. The downside with this and all hybrid systems is of course that it's not consistent. Scan through a big folder of 20MP+ photos, what happens to your application cache? Quite possibly evicted. I like to have an application drive (SSD) and media drive (HDD) and manage it myself. But for the more average user who wants a single big volume this looks like an okay pairing.