If one is looking for something to put their LAN headless server on and free up their RPi 4b, then I recommend an Odroid XU4. Eight cores, 2 GB RAM, eMMC storage or uSD, works great. I am actually running my home LAN on an Odroid XU4. Works great.
Right now the Odroid XU4 is approaching the end of it’s guaranteed availability, and merchants are having close out sales on them. Most importantly, the XU4 seem to be available. Quote from their web site.
We guarantee the production of XU4Q to the Mid-2023, but expect to continue production long after.
Shown above is the Odroid XU4Q model with a passive heat sink, which is what I have. A 40 mm fan fits right on the top of the XU4. They also have a fan cooled option, same model without the Q on the end.
Under “Additional Product” click on “Please choose product” to see your power supply options.
A RTC battery with special connector is also nice.
Scroll almost to the bottom to " Compatible Products" and the RTC battery and non Q XU4 are listed for comparison.
Then scroll down to see a ton of specs.
On the left, my Raspberry Pi 4b 4GB Web server. On the right, my Odroid XU4Q LAN server with a Noctua 40 mm fan. They are nice and cozy sitting on a shelf in the Utility room.