The SSD Review published a review on the Crucial's FREE Momentum Cache Works on Any NVMe SSD! - Our First Look at RAM Caching on NVMe SSDs

A quote from the article:

You heard that right. This is the first time we are exploring RAM caching on an NVMe SSD in this fashion. While many RAM caching softwares exist, no other SSD manufacturer has yet to enable RAM caching for NVMe SSDs in quite the way Crucial has. Crucial's Momentum Cache feature, part of Crucial Storage Executive, is unlocked for all NVMe SSDs, or at least the ones we have tested in our Z170 test system; the key here, of course, is that a compatible Crucial SSD must initially be on the system to enable this feature at all. So?we have a OCZ RD400 in our system. When we install Crucial Storage Executive on the system with a Crucial MX300 installed as well, Crucial Momentum will work on just about any NVMe SSD. Remove the Crucial SSD and Crucial Momentum will still cache the OCZ RD400 NVMe SSD. The key here is, as long as the Crucial drive is there initially, the software works on any number of NVMe SSDs.

 Crucial's FREE Momentum Cache Works on Any NVMe SSD! - Our First Look at RAM Caching on NVMe SSDs @ The SSD Review