“Purchased this heatsink to replace a very noisy fan. The case was easy to fit and came with extra pads. I am very pleased with the result, the pi 4 is consistently at a temp of 50 - 55C with a lower value if not being over pushed which is as good as the fan but no noise. I have the pi placed upright as suggested by David V and Graham T in their reviews and this gives a greater surface area to disperse the heat. The pi 4 is running MotionEye 24/7 monitoring two outside cameras over ethernet.”
“I bought this heat sink to replace a very noisy fan. I am very pleased with the purchase, it was easy to fit and is keeping my pi 4 consistently between 50 & 55 C (and lower when there is less processing going on). I have put it on its side as suggested by David V in his review which I think has made a big difference. The pi is running Motioneye 24/7 monitoring two cameras. I would highly recommend this product. It is nice to have a quiet room again!”