If you want to use rust, and can achieve fast enough performance by simply buying some newfangled threadripper machine with a boat load of ram, what difference

If you want to use rust, and can achieve fast enough performance by simply buying some newfangled threadripper machine with a boat load of ram, what difference does it make? The OP sounded like they wanted to use rust except for this one issue of compilation being too slow for their development style. How fast is fast enough and is that achievable just by throwing some money at the machine? Perfect is the enemy of good enough as they say.