Large. The electric power of the electric fan driven by the fan impeller is different, the power is different, its motor speed is different, this is the causal relationship of large power speed quickly driven fan impeller is large wind enough, on the contrary, the power of small speed does not drive the impeller is small, so the wind is not good, the fan out of the air volume is also small, so how much w number to buy according to their own needs and as good
30w and 55w electric fan difference is quite big. They differ in power by about a factor of two. The 30w fan is small and exquisite, easy to carry, and saves electricity. But the wind is light.
The 55w fan consumes a lot of power, but the wind power of its fan is also very large.