XIAO MG24 vs Feather M4
Cortex-M33 (EFR32MG24) at 39 MHz against Cortex-M4F (SAMD51) at 120 MHz, on real hardware, same C kernels, clocks verified.
XIAO MG24
Cortex-M33 (EFR32MG24)
- Family
- Arm Cortex-M
- Board
- XIAO MG24 Sense
- Clock
- 39 MHz
- float / double
- 32-bit / 64-bit
Feather M4
Cortex-M4F (SAMD51)
- Family
- Arm Cortex-M
- Board
- Feather M4 Express
- Clock
- 120 MHz
- float / double
- 32-bit / 64-bit
Typical gap
3.04×
Feather M4 faster, geometric mean of 30 cells
Biggest win for XIAO MG24
0.39×
double modulo
Biggest win for Feather M4
3.56×
uint8_t multiply
Clock for clock
1.01×
XIAO MG24 needs fewer cycles per op (3.08× clock gap)
Operation by operation
Every cell
How many times faster XIAO MG24 is than Feather M4, operations per second. Blue: XIAO MG24 ahead. Orange: Feather M4 ahead.
| Add | Subtract | Multiply | Divide | Modulo | |
|---|---|---|---|---|---|
| uint8_t | 1/3.31× 2.71 M/s · 8.98 M/s | 1/3.31× 2.71 M/s · 8.98 M/s | 1/3.56× 2.52 M/s · 8.98 M/s | 1/2.87× 2.44 M/s · 7.01 M/s | 1/3.32× 1.92 M/s · 6.36 M/s |
| uint16_t | 1/3.05× 2.94 M/s · 8.98 M/s | 1/3.07× 2.93 M/s · 8.98 M/s | 1/3.07× 2.93 M/s · 8.98 M/s | 1/2.93× 2.09 M/s · 6.12 M/s | 1/3.03× 1.77 M/s · 5.36 M/s |
| uint32_t | 1/3.04× 3.19 M/s · 9.71 M/s | 1/3.04× 3.19 M/s · 9.71 M/s | 1/3.31× 2.93 M/s · 9.71 M/s | 1/2.96× 2.21 M/s · 6.53 M/s | 1/3.15× 1.96 M/s · 6.19 M/s |
| uint64_t | 1/2.62× 2.36 M/s · 6.19 M/s | 1/2.62× 2.36 M/s · 6.19 M/s | 1/2.85× 1.97 M/s · 5.61 M/s | 1/3.11× 285 k/s · 885 k/s | 1/3.11× 285 k/s · 885 k/s |
| float | 1/2.83× 3.18 M/s · 8.98 M/s | 1/2.83× 3.18 M/s · 8.98 M/s | 1/2.82× 3.18 M/s · 8.98 M/s | 1/3.06× 1.54 M/s · 4.73 M/s | 1/2.72× 318 k/s · 866 k/s |
| double | 1/3.24× 370 k/s · 1.2 M/s | 1/3.23× 368 k/s · 1.19 M/s | 1/3.38× 503 k/s · 1.7 M/s | 1/3.33× 379 k/s · 1.26 M/s | 1/2.58× 165 k/s · 425 k/s |