I just got it running and temps dropped 7-10 degrees. Will update after a while. For now it looks great
These are very high quality fans. I ordered 7 fans and a controller. I used 5 of them in a mining rig. They are great fans, very high quality. I had 2 more extra. To use them in another rig, i ordered one more fan and controller from Amazon. They looked same but I’m disappointed in Amazon fans. They are same price but very low quality. I wish I ordered from this seller and wait a few more weeks.