The Corsair is less powerful than the standard exit fan but as its 3pin it works at 100% all the time rather than being controlled by the miner. The temps were actually 1c lower with the corsair because of this. When summer hits then i might have to switch them back but for now the db drop is worth it.
The front fan is actually a double blade if you check the close up. It's crazy powerful but mental loud haha. I dread to think how loud when its running 100%
I will try overclocking it soon so i will do a thorough sound and performance update :)