I heard a rumor CPU codes terminated in U are integrated with motherboard so they would be "worse" (that is what I heard). I only found some general meanings in https://www.intel.in/content/www/in/en/processors/processor-numbers.html. Could that be true?
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up vote 1 down vote accepted

Intel U means low power, it has often lower core count (older i7 had 4c/8t whereas i7U had 2c/4t) and lower TDP (partly achieved by lower frequency too).

Recent Intel laptop CPUs are based on FCBGA sockets, which mean soldered to the motherboard, whether it is an HQ or a U (which you can find at the bottom of the Intel spec sheet).

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