In addition to being faster CPUs, these have much faster I/O buses.

The RPi 3 could only talk to its 1GBit card at ~300MBit. The 4 can max out 1GBit.

These have 2x10GBit in the CPU package.

Put another way, these can be a high performance NAS/router, and simultaneously run the equivalent of a few RPis in VMs. Previously, AMD built an APU without embedded video.

Hopefully they will continue to do so, and those will sell well into the embedded/appliance space.

I believe these Ryzen APUs will run much faster than a Raspberry Pi, and they run x86 software as is commonly used by Windows. Glancing at the ~4,000 Passmark score I think these Ryzen APUs could even keep up with a single 1080p software video transcode, which I doubt is possible on a Raspberry Pi.

Disclaimer: I only have an RPi 2 running a home server at the moment and have not tried these new. Ryzen chips.

A lot more powerful. Example: https://www.smachz.com