Question: what is the difference between u and m processor?
Answer: A core M processor is core i5- 7Y54 (7th gen) and a same generation u series processor is core i5–7200u. ... Core M has 4.5w TDP whereas u-series has 15w meaning it sucks 3.3 times more power when doing casual work. But u-series can lower its tdp to 7 when CPU is being used less and m-series goes to 3.5.