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I have a dell xps 15 9560 with core i5-7300hq, is it possible to upgrade to i7-7700hq? And will it be difficult to upgrade? Thanks.

harryt processor is soldered to the board so you cannot upgrade it.

It is possible, but you need reballing equipment and a precise knack for soldering

What about swapping the motherboard. If you got a motherboard that had the i7-7700HQ processor, would it fit/be compatible with one that originally had the i5?