This is a pretty weak rebuttal, the MT7621 based board you cite has two MIPS 24k CPUs, straight out of 2005: https://wikidevi.com/wiki/MIPS_24K
All of the MT7621"s speed is from ASICs that accelerate NAT & WPA2, without that silicon external to the CPU, any kind of crypto would slowly chug along.
More competitive offerings like the OrangePi PC Plus ($19) and FriendlyARM boards based on Allwinner chips offer much nore performance for the dollar, but these are literally foriegn IP blocks Allwinner licensed, glued together and sent off to a 45n or 28nm fab to have manufactured. Most of the work Allwinner did for these chips was on a trashcan ready, buggy board support package.
All of the MT7621"s speed is from ASICs that accelerate NAT & WPA2, without that silicon external to the CPU, any kind of crypto would slowly chug along.
More competitive offerings like the OrangePi PC Plus ($19) and FriendlyARM boards based on Allwinner chips offer much nore performance for the dollar, but these are literally foriegn IP blocks Allwinner licensed, glued together and sent off to a 45n or 28nm fab to have manufactured. Most of the work Allwinner did for these chips was on a trashcan ready, buggy board support package.