Rumours: A variant of Huawei Nexus 6P appears with a Snapdragon 820 and 4GB RAM | TechNave
This guy got his Nexus 5X upgraded to 4GB RAM like it was nothing - PhoneArena
RAM 4 GB DDR3 1600 - Nexus IT & Computer Systems
4GB RAM upgraded of my Nexus 5X | XDA Forums
Tested Full Work Original Motherboard For LG Google Nexus 5X H791 H790 32G Logic Circuit Board Plate Change to 4GB RAM Work Fast - Price history & Review | AliExpress Seller -
Nexus 5X Successfully Upgraded With 4 GB Of RAM - SlashGear
Someone upgraded the RAM on their Nexus 5X to 4GB - GSMArena blog
HTC's 5-inch 'Sailfish' Nexus to Sport 12MP Rear Camera, 4GB RAM, and 2770mAh Battery
Someone upgraded the RAM on their Nexus 5X to 4GB - GSMArena blog