In July 2012, Samsung Electronics Co., Ltd., announced that it has begun sampling the industry's first 16 GiB registered dual inline memory modules (RDIMMs) using DDR4 SDRAM for enterprise server systems.[35][36] In September 2012, JEDEC released the final specification of DDR4.[1] In April 2014, Hynix announced that it has developed the world's first highest-density 128 GiB module based on 8 Gib DDR4 using 20 nm technology.