We scope out the back side of the motherboard first, and find some familiar heavy hitters:

Samsung Exynos 7420 Octa-core Processor - 64-bit, 2.1 GHz Quad + 1.5 GHz Quad, with Samsung K3RG3G30MM-DGCH 3 GB LPDDR4 RAM layered in

Samsung KLUBG4G1BD 32GB NAND Flash

Skyworks 78041 Hybrid Multimode Multiband (MMMB) Front-End Module (FEM)

Avago AFEM-9020 PAM

Broadcom BCM4773 GNSS Location Hub

Samsung C2N8AF (possibly image processor)

Avago A7007 (seen previously in the Galaxy S5)