TSMC Confirms Breakthrough in A14 Process: 90% Performance and Yield Achieved

TSMC has confirmed significant progress in developing its 1.4nm A14 process technology, which is advancing at a faster pace than previous generations. According to company CEO C.C. Wei, internal test samples have achieved nearly 90% of target transistor performance and comparable yield rates for 256-megabit SRAM chips. Just three months ago, these metrics stood at 85% and 80%, respectively, highlighting the rapid improvements in the technology.

For comparison, the N2 (2nm) process showed more modest results at a similar stage: in April 2023, transistor performance exceeded 80%, while SRAM yield was slightly above 50%. By April 2024, these figures had risen to 90% and 80%, respectively. The accelerated progress of A14 is attributed to TSMC's accumulated experience with second-generation Gate-All-Around (GAA) transistors, first introduced in N2.

A14 promises substantial improvements over N2, including a 10-15% performance increase at the same power consumption or a 25-30% power reduction at equivalent frequencies. Additionally, a 20-23% increase in transistor density is expected, which is particularly valuable for AI, high-performance computing, and smartphone applications. Despite lacking Super Power Rail technology, A14 has garnered strong interest from both mobile processor manufacturers and AI/HPC developers.

According to C.C. Wei, customers are actively working on A14-based designs and aiming to finalize them ahead of schedule. This could enable TSMC to begin mass production earlier than the planned second half of 2028, provided yield rates remain high and customer projects are ready.