▁of ▁des kt ops . ▁ ▁Intel ▁did ▁try ▁to ▁solve ▁this ▁problem ▁with ▁the ▁introduction ▁of ▁the ▁M MC ▁for ▁mobile ▁computing . ▁ ▁The ▁M MC ▁was ▁a ▁standard ▁module ▁upon ▁which ▁the ▁CPU ▁and ▁external ▁cache ▁memory ▁could ▁sit . ▁ ▁It ▁gave ▁the ▁not ebook ▁bu yer ▁the ▁potential ▁to ▁upgrade ▁his ▁CPU ▁at ▁a ▁later ▁date , ▁e ased ▁the ▁manufact uring ▁process ▁somewhat , ▁and ▁was ▁also ▁used ▁in ▁some ▁cases ▁to ▁sk irt ▁U . S . ▁import ▁duties ▁as ▁the ▁CPU ▁could ▁be ▁added ▁to ▁the ▁ch ass is ▁after ▁it ▁arrived ▁in ▁the ▁U . S . ▁ ▁Intel ▁stuck ▁with ▁M MC ▁for ▁a ▁few ▁gener ations ▁but ▁ultimately ▁could ▁not ▁maintain ▁the ▁appropriate ▁speed ▁and ▁data ▁integrity ▁to ▁the ▁memory ▁sub system ▁through ▁the ▁M MC ▁conne ctor . ▁A ▁more ▁special ized ▁power ▁saving ▁CPU ▁variant ▁for ▁la pt ops ▁is ▁the ▁Power PC ▁ 6 0 3 ▁family . ▁ ▁Der ived ▁from ▁IBM ' s ▁ 6 0 1 ▁series ▁for ▁la pt ops ▁( while ▁the ▁ 6 0 4 ▁branch ▁was ▁for ▁des kt ops ), ▁it ▁found ▁itself ▁used ▁on ▁many ▁low ▁end ▁Apple ▁des kt ops ▁before ▁it ▁was ▁wild ly ▁used ▁in ▁la pt ops , ▁starting ▁with ▁Power Book ▁models ▁ 5 3 0 0 , ▁ 2 4 0 0 , ▁ 5 0 0 ▁up gr ades . ▁ ▁What ▁started ▁out ▁as ▁a ▁laptop ▁processor ▁was ▁eventually ▁used ▁across ▁all