Note that on general code this should come in a little faster than a same-MHz (1.8 GHz) Raspberry Pi 4 / 400, or other Arm A72 board.
Unless your code makes use of NEON (or SSE/AVX on the N100). This CPU has no SIMD capabilities. The next generation of (not yet available in hardware) SiFive cores (P670, X280) do, as does the SpacemiT K1/M1 chip that is in a number of boards now e.g. Milk-V Jupiter, but has a lower-performance in-order core similar to Arm A55.
It's not going to be anywhere near the speed of a Pi 5 or the RK3588 boards such as Rock 5 or Orange Pi 5.
On my Primes benchmark (https://hoult.org/primes.txt) a 1.4 GHz P550 machine came in at 11.54s, half a second faster than a 1.5 GHz Pi 4 running 64 bit code. I'm expecting the 1.8 GHz boards to come in around 9.0s.
