Feather M4 vs MSP430FR2433

Cortex-M4F (SAMD51) at 120 MHz against MSP430FRx (MSP430FR2433) at 15.99 MHz, on real hardware, same C kernels, clocks verified.

Feather M4

Cortex-M4F (SAMD51)

MSP430FRx (MSP430FR2433)

Typical gap

93.7×

Feather M4 faster, geometric mean of 30 cells

Biggest win for Feather M4

1,808×

double multiply

Closest cell

13.9×

uint16_t add

Clock for clock

12.5×

Feather M4 needs fewer cycles per op (7.50× clock gap)

How many times faster Feather M4 is than MSP430FR2433, operations per second. Blue: Feather M4 ahead. Orange: MSP430FR2433 ahead.

	Add	Subtract	Multiply	Divide	Modulo
uint8_t	14.5× 8.98 M/s · 621 k/s	15.0× 8.98 M/s · 598 k/s	31.0× 8.98 M/s · 290 k/s	81.1× 7.01 M/s · 86.4 k/s	74.0× 6.36 M/s · 86 k/s
uint16_t	13.9× 8.98 M/s · 646 k/s	14.4× 8.98 M/s · 622 k/s	29.1× 8.98 M/s · 309 k/s	90.9× 6.12 M/s · 67.3 k/s	80.1× 5.36 M/s · 67 k/s
uint32_t	26.2× 9.71 M/s · 370 k/s	24.4× 9.71 M/s · 397 k/s	46.3× 9.71 M/s · 210 k/s	283× 6.53 M/s · 23.1 k/s	269× 6.19 M/s · 23 k/s
uint64_t	41.1× 6.19 M/s · 151 k/s	45.2× 6.19 M/s · 137 k/s	59.5× 5.61 M/s · 94.3 k/s	218× 885 k/s · 4.06 k/s	174× 885 k/s · 5.1 k/s
float	534× 8.98 M/s · 16.8 k/s	553× 8.98 M/s · 16.2 k/s	1,534× 8.98 M/s · 5.85 k/s	405× 4.73 M/s · 11.7 k/s	40.8× 866 k/s · 21.3 k/s
double	146× 1.2 M/s · 8.18 k/s	153× 1.19 M/s · 7.8 k/s	1,808× 1.7 M/s · 942 /s	601× 1.26 M/s · 2.1 k/s	48.4× 425 k/s · 8.79 k/s