When comparing The Parallella Board vs esp32, the Slant community recommends The Parallella Board for most people. In the question“What are the best single-board computers?” The Parallella Board is ranked 18th while esp32 is ranked 45th. The most important reason people chose The Parallella Board is:
The Parallella Board makes use of the Epiphany III coprocessor which is invisible to the OS unless directly addressed through its APIs. It currently boasts 32 gigaflops from its 16-core variant with a promise of 100 gigaflops for a 64-core model which will be available in the future.
Specs
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Pros
Pro Amazing performance because of the Epiphany coprocessor
The Parallella Board makes use of the Epiphany III coprocessor which is invisible to the OS unless directly addressed through its APIs. It currently boasts 32 gigaflops from its 16-core variant with a promise of 100 gigaflops for a 64-core model which will be available in the future.
Pro Low cost Xilinx Zynq FPGA development
Although not a beefy FPGA, the price is right
Pro Excellent many-core RISC architecture
High performance, energy-efficient floating point capable, general purpose RISC cores
Pro Great board for programmers to experiment on different platforms
The Parallella is a great board for programmers to experiment programmin on ARM, FPGA and the Epiphany architecture in one compact package.
Pro Completely open source
Parallella uses open source hardware. The drivers are released as open source as well. All the details about the board designs and schematics can be found on GitHub.
Pro Ships with open source development tools geared towards Epiphany development
Parallella ships with several open source tools geared towards developing for the Epiphany architecture. Some of these tools include a C compiler, Eclipse, OpenCL SDK/compiler and runtime libraries.
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
Cons
Con Not great for media streaming
The Parallella board was built to give everyone access to a mini-supercomputer. It's strength lies in the Epiphany which makes it great for parallel computing and image processing, unfortunately it's not good with media (audio and video) streaming.
Con Requires dedicated software development
Since it uses a different architecture than most boards, out-of-the-box software is not compatible with it. Instead, there's a huge GitHub repository with official ports of popular software compatible with the Parallella Board.
Con Some variants require soldering
Not all variants include easily plugable pins. Usually only the more expensive variants include these.
