PIC18F57Q84 vs Feather M4
PIC18F (PIC18F57Q84) at 64 MHz against Cortex-M4F (SAMD51) at 120 MHz, on real hardware, same C kernels, clocks verified.
PIC18F57Q84
PIC18F (PIC18F57Q84)
- Family
- PIC / dsPIC
- Board
- PIC18F57Q84 Curiosity Nano
- Clock
- 64 MHz
- float / double
- 32-bit / 32-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
70.2×
Feather M4 faster, geometric mean of 25 cells
Biggest win for PIC18F57Q84
0.06×
uint8_t add
Biggest win for Feather M4
464×
float divide
Clock for clock
37.5×
Feather M4 needs fewer cycles per op (1.88× clock gap)
Operation by operation
Every cell
How many times faster PIC18F57Q84 is than Feather M4, operations per second. Blue: PIC18F57Q84 ahead. Orange: Feather M4 ahead.
| Add | Subtract | Multiply | Divide | Modulo | |
|---|---|---|---|---|---|
| uint8_t | 1/16.7× 538 k/s · 8.98 M/s | 1/17.8× 504 k/s · 8.98 M/s | 1/17.3× 520 k/s · 8.98 M/s | 1/51.8× 135 k/s · 7.01 M/s | 1/59.9× 106 k/s · 6.36 M/s |
| uint16_t | 1/27.4× 328 k/s · 8.98 M/s | 1/27.4× 328 k/s · 8.98 M/s | 1/31.3× 287 k/s · 8.98 M/s | 1/98.4× 62.1 k/s · 6.12 M/s | 1/76.0× 70.6 k/s · 5.36 M/s |
| uint32_t | 1/40.5× 240 k/s · 9.71 M/s | 1/40.5× 240 k/s · 9.71 M/s | 1/414× 23.5 k/s · 9.71 M/s | 1/267× 24.5 k/s · 6.53 M/s | 1/216× 28.6 k/s · 6.19 M/s |
| uint64_t | not measured | not measured | not measured | not measured | not measured |
| float | 1/240× 37.4 k/s · 8.98 M/s | 1/283× 31.7 k/s · 8.98 M/s | 1/398× 22.6 k/s · 8.98 M/s | 1/464× 10.2 k/s · 4.73 M/s | 1/43.8× 19.8 k/s · 866 k/s |
| double | 1/32.0× 37.4 k/s · 1.2 M/s | 1/37.6× 31.7 k/s · 1.19 M/s | 1/75.5× 22.6 k/s · 1.7 M/s | 1/123× 10.2 k/s · 1.26 M/s | 1/21.5× 19.8 k/s · 425 k/s |