At the moment Samsung is building 3GB LPDDR3 modules and they are starting to show up in some of its products. However, Samsung’s 3GB modules use six 20nm-class 4Gb chips, so 3GB modules based on SK Hynix 6Gb chips could get there with just four chips, ending up somewhat smaller and cheaper.
The new SK Hynix chip is rated at 1,866 Mbps and it can handle a maximum of 7.4GB/s in single channel mode. In dual channel mode the chip can hit 14.8GB/s. The chips are already sampling to potential customers.
Samsung is also working on 6Gb LPDDR3 chips that should end up in its 3GB modules and its high-end mobile products.