STM32H723ZET6, main frequency up to 550MHz, supports Marlin and Klipper, the best choice for Klipper high-speed printing. However, due to the limitation of 512kb flash, currently. STM32F429ZGT6, 180MHz main frequency, supports Marlin and Klipper, and with 1Mb flash, it can support RRF full function.
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