I don't think you realize how far ahead the M1 actually is... it's about processing power per watt. The desktop you used actually 1) has a fan 2) is probably consuming many more than 15 watts 3) would burn my lap if it was anywhere near it.

The implications are huge. Think about the competitive advantage a data center that operated with no cooling requirements and much lower power requirements would be if it got the same (or better!) performance than an equivalent intel based one.

It's not just faster, its faster than equivalent parts AND way more efficient.