Quote:Here is factory specs:
They are accurate, but many are not. Honestly these specs mean very little because they only show airflow & noise level in open space / free airflow and pressure rating at full speed. Most of us do not run our fans at full speed 99% of the time. Some of us never run them at full speed.
The data / graphs from Thermalbench and CoolingTechnique give show us in more detail how the fans will perform when we use them.
Here is TY-147A and PH-F140MP CoolingTechnique data. You can see they are very similar