FILE PHOTO – SK Hynix Inc’s DRAM modules are seen in this picture illustration taken at the company’s main office building in Seoul January 28, 2017 763 × 468 With supplies tight, memory chipmakers head into ultra-super-cycle FILE PHOTO – SK Hynix Inc’s DRAM modules are seen in this picture illustration taken at the company’s main office building in Seoul October 24, 2012. REUTERS/Kim Hong-Ji/File Photo