[xcv123]

From the article:

"In fact, Intel’s future hardware will offer upgradeable RAM. Jim Johnson, Senior Vice President at Intel, explicitly said about user-upgradeable RAM: “We will offer those options in the future.” He also said that the “next turn of the roadmaps will offer more traditional options.”"

[rbanffy]

Ideally, some RAM on a tight and close bus with high bandwidth is a good thing to have in the CPU package. Xeons have HBM since the Phi alongside motherboard based memory.