When comparing Rock64 vs esp32, the Slant community recommends Rock64 for most people. In the question“What are the best single-board computers?” Rock64 is ranked 11th while esp32 is ranked 37th.
Ranked in these QuestionsQuestion Ranking
Pro USB 3 Bus support
Pro Can have up to 4gb of low power RAM
Pro Gigabyte ethernet
Pro Beats Raspberry Pi on price and performance
Pro Main header Pi 3 pin layout
Can use Pi shields.
Pro 4K/60h hdmi 2a
Pro Barrel power connector
More rugged connection. Less likely to be damaged.
Pro Extra Gpio pins
Pro Many variants available
Many different variants are available depending how good you are at soldering or how small it needs to be.
Pro Very small
Can fit inside small devices.
Pro Very cheap
Without case can be below $5.
Pro Has ultra-low power mode
Pro Has bluetooth and wifi modules
Con Lack of support, Unstable USB 3,
Only Android with TV UI is available. It is almost unusable with a touchscreen display.
Community is somewhat helpful but is very small. The board developers do not participate in community discussions. No regular Android build available. Lack of accessories and project guidelines.
Con Power connector is not MicroUSB or MiniUSB
Can't use power banks as a power source because of that.
Con No on-board Wi-Fi or Bluetooth
Con Lack of accessories
Con Some variants require soldering
Not all variants include easily plugable pins. Usually only the more expensive variants include these.