YMTC Develops 4F² DRAM Prototype Running at 9,600 MT/s

YMTC is following CXMT in developing a 4F² DRAM cell prototype with a vertical channel transistor at 9,600 MT/s, with mass production planned at Fab 3. Micron, meanwhile, calls 4F² density gains a "myth" and is betting on 3D DRAM instead.

• YMTC's 4F² prototype uses a VCT transistor at 9,600 MT/s
• Mass production of the 4F² DRAM is planned at Fab 3
• Micron says 4F² has no viable scaling path
• 4F² cuts cell area 30–40% and boosts density 30–50%