no, it's m7 actually.
the 2016 model has intel branded m7,
the 2017 model has the intel branded i7 (which is actually just purely a marketing thing
because it had the two cores and ran low clock speed slightly higher than the m5 of the same generation)
sorry for my nerdiness,
the m5 itself thermal throttles within seconds and was too 'powerful' for the cooling design.
m7 is even worse.
so literally any chips intel made at the time would underperform their low performance on the 12-inch macbook
LOL!!!
p.s. see the forum for the thermal pad mod (which helped meaningfully but still it does throttle even after that)
LOL