We have to dispose of quite a few brackets and shields on our way to the motherboard, but it's all worth it for these chips:

6 GB of Micron LPDDR4X RAM layered over the Qualcomm Snapdragon 855

SK hynix H28U72301CMR 64 GB Universal Flash Storage

Samsung K4U4E3S4AF-HGCJ mystery RAM, with a big "P" on it—best guess, this is dedicated RAM for the new Pixel Neural Core chip, likely hiding directly underneath

Pixel H1C2M3 Titan M security chip

Knowles 8508A quad-core audio processor, no doubt to help with the new live caption and transcription features.

Murata SS9709025

Avago AFEM-9106 (likely a front-end module)