ESP32 vs XIAO MG24
Xtensa LX6 (ESP32) at 240 MHz against Cortex-M33 (EFR32MG24) at 39 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
Typical gap
4.13×
ESP32 faster, geometric mean of 30 cells
Biggest win for ESP32
8.02×
double add
Closest cell
1.21×
double divide
Clock for clock
1.49×
XIAO MG24 needs fewer cycles per op (6.15× clock gap)
Operation by operation
Every cell
How many times faster ESP32 is than XIAO MG24, operations per second. Blue: ESP32 ahead. Orange: XIAO MG24 ahead.
| Add | Subtract | Multiply | Divide | Modulo | |
|---|---|---|---|---|---|
| uint8_t | 4.22× 11.4 M/s · 2.71 M/s | 4.22× 11.4 M/s · 2.71 M/s | 4.53× 11.4 M/s · 2.52 M/s | 4.27× 10.4 M/s · 2.44 M/s | 5.22× 10 M/s · 1.92 M/s |
| uint16_t | 3.89× 11.4 M/s · 2.94 M/s | 3.90× 11.4 M/s · 2.93 M/s | 3.90× 11.4 M/s · 2.93 M/s | 4.46× 9.32 M/s · 2.09 M/s | 5.07× 8.97 M/s · 1.77 M/s |
| uint32_t | 3.76× 12 M/s · 3.19 M/s | 3.76× 12 M/s · 3.19 M/s | 4.10× 12 M/s · 2.93 M/s | 4.53× 10 M/s · 2.21 M/s | 4.89× 9.6 M/s · 1.96 M/s |
| uint64_t | 2.99× 7.05 M/s · 2.36 M/s | 2.94× 6.94 M/s · 2.36 M/s | 2.43× 4.79 M/s · 1.97 M/s | 6.14× 1.75 M/s · 285 k/s | 5.94× 1.69 M/s · 285 k/s |
| float | 3.77× 12 M/s · 3.18 M/s | 3.77× 12 M/s · 3.18 M/s | 3.77× 12 M/s · 3.18 M/s | 2.46× 3.8 M/s · 1.54 M/s | 5.44× 1.73 M/s · 318 k/s |
| double | 8.02× 2.96 M/s · 370 k/s | 7.27× 2.68 M/s · 368 k/s | 3.70× 1.86 M/s · 503 k/s | 1.21× 459 k/s · 379 k/s | 6.71× 1.11 M/s · 165 k/s |