After announcing their intention to begin mass production of their latest 72-Layer 3D NAND Flash back in April, SK Hynix has now confirmed that it has entered mass production of the high density NAND modules. Apparently, SK Hynix has already achieved the much sought-after "golden yield" ratios, where the semiconductor yield is now at such a level that it is advantageous to finally enter mass production. Apparently, SK Hynix's leadership was fearful of not being able to achieve the golden yield in a timely manner after their announcement of the technology only three months ago; however, after its "management team and engineers repeatedly spent nights doing research, yield went up vertically and has become comparable to Samsung Electronics'" own yield - and as you know, Samsung is kind of the golden standard when it comes to NAND technology.

According to industry sources, SK Hynix is already mass-producing SSDs (Solid State Drives) with the company's own controllers and firmware which leverage this new 72-layer 256Gb NAND flash memory. This is a welcome change for the company which should allow it to increase revenue, since this is the first time controllers are developed in-house. The company is also said to be already producing eMMC (embedded Multimedia Card) for mobile devices based on this technology, with supply already arriving to its customers.