It requires a separate keyboard, which means more space usage and more cables. And not sure, but I think the N150 has a fan, so more noise.

N150 machines come with or without fans, the chip is cool enough to run passively with a decent heatsink.

e.g. https://www.minix.com.hk/products/minix-z150-0db-fanless-min...

The ones with fans tend to be cheaper and have better sustained performance though.