Certainly one of the next big things on the horizon is wider use of chip stacks. Interestingly, Jen-Hsun Huang, chief executive of Nvidia, was on my flight out of San Francisco, and I had the chance to ask him a couple questions about the technology.

Nvidia came out early saying back at its 2013 GPU Technology Conference that it would use the kind of 2.5-D chip stacks pioneered by Xilinx and TSMC. At that time it showed a picture that was borrowed from Micron describing its Hybrid Memory Cube as part of a 2015 plan for its Volta chip.

Over time the plans seem to have changed. At GTC this year and the co-located IBM Open Power Summit, Nvidia said Volta is now a 2017 chip and another entry to the road map, Pascal, would be the first of its chips to use a 2.5-D approach in 2016.

By: DocMemory
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