Offering GBE, 64bit quad core, officially supported by Armbian and dirt cheap
If you need even more power staying at low price, could accept the sacrifice in reliability and get a PCIe which is broken by design you can go for a H6 based board like OrangePi OnePlus. The H6 SoC is clocked with 1,8 GHz. All H6 boards are still in development stage and do not come with support.
I have two OPi 1+ running about since when they were released and besides the very first issues like not having ethernet working they now are working quite well for me.
because new user write into the dev forum instead of review their own actions and look for a solution.
Because of that there is an own section in the forum:
Board doesn't start
SD card and PSU issues
Or if you want to read a current posting that goes in that direction.
So until you have gathered some basic experience, supporting others, you are blocked from writing to the dev forum, but everywhere else is open.
If you are here for a couple months on a regular basis, you will understand.