alt Hacker NewsAccording to the recent article HBM memory is 3x less efficient wafer area wise than LPDDR; but the bandwidth is more than triple.
What if its in everyone's interest to buy computers at say 1/3rd the rate and switch everything over to HBM?
the discrepancy between compute and memory has been growing for ages, perhaps a painful switch to HBM is exactly what we need?
Would you rather have 3 intermediate computers with low memory bandwidth, or wait a little longer statistically so that we can all enjoy a new computer at 1/3rd the rate but much higher bandwidth than the area ratio?
Replies
Can’t put HBM in smartphones and laptops. The power drain is too great.
Not many workloads are RAM bandwidth limited. Power and latency are much more common bottlenecks, and HBM loses on both of those.
These are fundamentally different points in design space though, hbm doesn’t have a 10mw idle draw like lpddr does.