Running some benchs on the chip:
```
INFO  [bench::bench] i32 add: 433.48685
INFO  [bench::bench] i32 mul: 400.3503
INFO  [bench::bench] f32 add: 400.4004
INFO  [bench::bench] f32 mul: 400.30023
INFO  [bench::bench] f32 mul_add: 325.30243
INFO  [bench::bench] f32 div: 43.38101
```
Not that great overall, but you can do SIMD on the NEON engine and there's a lot of memory available.