What processing power in a laptop do I need to output 1080p video?

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http://superuser.com – Will the AMD or Intel integrated GPU have enough power to drive blu ray movie without stutter, or do I need to look for laptop with a dedicated graphics card? Does it make any difference if CPU is duel core, i.e. 2nd or 3rd gen i3 is adequate as compared to i5? Looking to output (wirelessly 802.11n) to 55 inch tv with least expensive quality build laptop. (HowTos)