There's no official confirmation yet, but there are some indications that the new Model 3 May feature an HW 4.0 chip. For example, in a recent Model 3 code update, the words \"mcu_hw4\" appear, the \"mcu\" is likely to represent the on-board control unit, and \"hw4\" is the hardware version number. In addition, Tesla CEO Musk has previously revealed that the new Model S and Model X will use a new chip, and this chip is likely to be HW 4.0. Overall, the new Model 3 is very likely to use HW 4.0 chip, but the official has not been officially announced.
According to the official information released by Tesla, the new Model 3 uses the HW 3.0 chip instead of the HW40 chip. The HW 3.0 chip is an upgraded version of the autopilot computer with higher processing speed and greater performance that can support Tesla's most advanced autopilot features. Although the HW 40 chip is also a high-performance chip, it is not the official chip model used by Tesla. Therefore, we can be sure that the new Model 3 uses the HW 3.0 chip.