Hexus posted a review on the Qnap TS-453Bmini
A quote from the article:
Space-saving vertical NAS now available with an Intel Celeron J3455 processor. There's no shortage of choice when it comes to network-attached storage (NAS), yet given the multimedia requirements of the modern user it is no surprise to find that refreshed models are being launched at regular intervals.Qnap TS-453Bmini Review @ Hexus
Wanting to make use of the most current processor technologies, top-tier NAS manufacturers are quick off the mark in providing upgrades and it is common to see existing models refreshed with new internal components. That's exactly what Qnap is doing with the TS-453Bmini, a four-bay unit that takes over the mantle from 2015's TS-453mini.