3D stacked memory should be used as high-bandwidth memory (HBM) that’s smaller yet faster than GDDR5. It can be used as system RAM or graphics memory. HBM was developed mainly for graphics applications and it should enter mass production in 2015. Built using new Wide I/O and TSV technologies, it should support bandwidths from 128GB/s to 256GB/s.Source: FUD Zilla
Such bandwidth makes a lot more sense when it comes to GPUs, at least at this point. Both Nvidia and AMD are expected to use stacked memory in their 20nm products, but probably not in first-generation 20nm products.
AMD and SK Hynix to collaborate on 3D memory
Posted on Wednesday, Dec 18 2013 @ 12:12 CET by Thomas De Maesschalck