First, the model is different.
The model of the 3389 chip and the 3327 chip are different.
Second, the production date is different.
3389 production date is late; The 3327 has an early production date.
Third, the performance is different.
3389 is a new model, good performance quality; The 3327 is an old product with poor performance.
Fourth, different uses.
3389 for high-end products; The 3327 is used for general products.