This 5.2-inch handset is powered by a MediaTek MT6737M processor, next to 2 GB RAM, 16 GB internal storage, and a 13 MP main camera. It runs Android Marshmallow and can be acquired from Amazon for less than $150 USD.
http://www.notebookcheck.net/Asus-ZenFone-3-Max-now-available-in-the-US.185252.0.html
". At last, Amazon also has the top-of-the-line Deluxe model listed - 4 GB RAM, 64 GB storage, Qualcomm Snapdragon 625, and a price tag of $399.99 USD."
I think what you guys are referring to is the regular Zenfone 3 rather than Zenfone 3 Deluxe, which comes with Snapdragon 820/821.