What is the point of buying a 3000rpm fan and running it at 1500? You just pay extra money for a more powerful motor, which you will not use. The blades are essentially the same as in retail NF-A14, so you will get the same airflow at 1500rpm on both models. Noise might be actually worse on the Industrial version at the same rpm, because of a more massive motor.
Here is a nice overview table of their products that proves my point: