Thing Plus - SAMD51
Is it power you seek? With a 32-bit ARM Cortex-M4F MCU, it is one of Sparkfun's most powerful microcontroller boards yet. The SAMD51 Thing Plus provides you with an economical and easy to use development platform if you're needing more power with minimal working space. This Thing even comes flashed with the convenient UF2 bootloader.
The ATSAMD51J20 microcontroller boasts a maximum CPU speed of 120MHz, 1MB of flash memory, 256KB of SRAM, up to 6 SERCOM interfaces, amongst many other features. The SAMD51 Thing Plus provides a USB interface for programming and power, a Qwiic connector, 600mA 3.3V regulator, and LiPo charger all in a feather pin layout.
More information is available on the website of Sparkfun.