Where Power Is Spent In HBM

What really happens when you shorten the distance to memory?


HBM is gaining ground because of a spike in the amount of data that needs to be processed quickly, but big reductions in power are possible if that processing can be moved closer to the HBM modules, and if more can be done in each compute cycle without sending data back and forth to memory as frequently. Steven Woo, fellow and distinguished engineer at Rambus, talks about what can be done to boost performance and reduce power on the memory side, and what the tradeoffs will be when that happens.

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