Arduino Uno vs ESP32
ATmega328P at 16 MHz against Xtensa LX6 (ESP32) at 240 MHz, on real hardware, same C kernels, clocks verified.
Typical gap
56.9×
ESP32 faster, geometric mean of 30 cells
Biggest win for Arduino Uno
0.09×
double modulo
Biggest win for ESP32
403×
uint32_t divide
Clock for clock
3.80×
ESP32 needs fewer cycles per op (15.0× clock gap)
Operation by operation
Every cell
How many times faster Arduino Uno is than ESP32, operations per second. Blue: Arduino Uno ahead. Orange: ESP32 ahead.
| Add | Subtract | Multiply | Divide | Modulo | |
|---|---|---|---|---|---|
| uint8_t | 1/23.4× 490 k/s · 11.4 M/s | 1/23.4× 490 k/s · 11.4 M/s | 1/25.5× 448 k/s · 11.4 M/s | 1/73.3× 142 k/s · 10.4 M/s | 1/70.3× 142 k/s · 10 M/s |
| uint16_t | 1/21.9× 522 k/s · 11.4 M/s | 1/21.9× 522 k/s · 11.4 M/s | 1/27.7× 413 k/s · 11.4 M/s | 1/134× 69.5 k/s · 9.32 M/s | 1/129× 69.5 k/s · 8.97 M/s |
| uint32_t | 1/35.1× 342 k/s · 12 M/s | 1/35.1× 342 k/s · 12 M/s | 1/88.9× 135 k/s · 12 M/s | 1/403× 24.8 k/s · 10 M/s | 1/387× 24.8 k/s · 9.6 M/s |
| uint64_t | 1/94.5× 74.6 k/s · 7.05 M/s | 1/93.1× 74.6 k/s · 6.94 M/s | 1/133× 35.9 k/s · 4.79 M/s | 1/114× 15.3 k/s · 1.75 M/s | 1/111× 15.2 k/s · 1.69 M/s |
| float | 1/122× 98.3 k/s · 12 M/s | 1/121× 98.7 k/s · 12 M/s | 1/138× 87 k/s · 12 M/s | 1/118× 32.2 k/s · 3.8 M/s | 1/16.8× 103 k/s · 1.73 M/s |
| double | 1/30.2× 98.1 k/s · 2.96 M/s | 1/27.2× 98.6 k/s · 2.68 M/s | 1/21.5× 86.8 k/s · 1.86 M/s | 1/14.3× 32.2 k/s · 459 k/s | 1/10.8× 103 k/s · 1.11 M/s |