1.4nm工厂，低调开工

Group 1 - TSMC's new 1.4nm advanced process plant in Central Taiwan Science Park has officially commenced construction, with a total investment estimated at NT$1.5 trillion, expected to complete risk production by the end of 2027 and mass production in the second half of 2028, potentially generating over NT$500 billion in revenue [1] - The A14 process technology promises significant improvements over the N2 process, including a speed increase of 10-15%, a power reduction of 25-30%, and a logic density increase of approximately 1.23 times [3][5] - A14 technology utilizes TSMC's second-generation GAA (Gate-All-Around) nanosheet transistors and NanoFlex Pro technology, which allows for greater design flexibility [3][11] Group 2 - The A14 process will initially lack the back-side power delivery (BSPDN) feature, limiting its application to those that do not require intensive power routing, while a version with BSPDN is planned for 2029 [8][11] - TSMC plans to introduce high-performance (A14P) and cost-optimized (A14C) versions of the A14 process after 2029, with the first version expected to be available in 2028 [11][12] - The NanoFlex Pro architecture enables chip designers to fine-tune transistor configurations for optimal power, performance, and area (PPA), enhancing the overall efficiency of the design process [12]