But in the Intel product specifications, the corresponding model of these specifications can not be found. The closest is the Core i5-8259U, but the reference frequency, nuclear display models are not the same, so it is suspected to be another customized product, after all, Apple custom processor, The graphics card is too common.

Now, the Intel ARK product database has quietly appeared a "Core i5-8257U", which is the new U in the MacBook Pro compared to the specification, and gives more complete parameters.

i5-8257U belongs to Coffee Lake's eight-generation Core family, 14nm process, four cores and eight threads, reference frequency 1.4GHz, core frequency up to 3.9GHz, three-level cache 6MB, integrated core Irisu Plus 645, frequency 300-1050MHz, with 128MB eDRAM Cache, memory support up to 32GB DDR4-2400/LPDDR3-2133, thermal design power consumption 15W.

Compared with the i7-8259U, its reference frequency is reduced by 900MHz, and the turbo frequency acceleration is also slower than 100MHz. The nuclear display frequency has not changed. It is because the thermal design power consumption is reduced from 28W to 15W. Of course, the performance loss is also It will be obvious.

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