Front side of the logic board (gigantic version can be seen here):

Intel BD82HM65 Platform Controller Hub

AMD Radeon HD 6490M GPU (labeled as AMD 216-0809000)

Quad-Core Intel i7-2630QM Mobile Processor (labeled as 2V041112A0127)

Broadcom BCM57765B0KMLG Integrated Gigabit Ethernet and Memory Card Reader Controller

Intel L051NB32 EFL (we assume this is the Thunderbolt port controller)

Parade PS8301 U08FUC

TDK 6T213HF 1045 H