DigiTimes, citing industry sources, has reported that PCIe-based SSDs will be overtaking SATA-based solutions during 2019. This makes sense in a number of ways: the smaller footprint for Pcie-based, M.2 SSDs means they are prone to higher adoption form laptop manufacturers tan their SATA counterparts. On the desktop and DIY side of things, SATA solutions have sometimes been preferred to their PCIe counterparts mostly due to the pricing delta between solutions across those form factors.

However, as NAND prices have declined precipitously, and PCIe controllers' pricing has done so too, we are now hitting a point where the cost strain on SATA's additional materials compared to their PCIe counterparts leaves the delta so small that it doesn't make any sense to purchase a SATA-limited drive (usually limited only by the speed of the SATA III interface itself) instead of a PCIe-based one. AS demand picks up some additional 20-25% for 2019, this will mostly be taken up by PCIe-based solutions. Pricing of a 512 GB PCIe storage device is now comparable to that of a 256 GB unit just a year ago. Pricing is expected to keep falling for the duration of this year.