Quiet, just a tiny buzz you might not even notice if you have other fans, aircon, or music.
CORN Laptop Cooler Cooling Pad is being used on a Dell Precision M6300. Before using the cooling pad the bottom of the laptop would be hot to the touch. Although after placing Corn Cooling pad under the laptop, the bottom was cool to the touch even after hours of usage.
TL/DR: Good product, does like it's supposed to. After adding a nvme to my MSI Camo Squad ( Yeah, I bought one of those in 2017 lol ) giving it new life I was having expected heat issues with throttling regularly. I tried a few different cooling pads however results were disappointing at best. I bought some fans and was going to get out my woodworking tools to hack my laptop desk ( read hospital style mobile tray ) when I seen this cooler dirt cheap with one of the smaller fans looking like it was perfectly positioned to force air into the tiny intakes below the nvme drive. BINGO, dropped from hitting 70c just cruising the hobby forums down to a max of 50c with Steam downloading to the drive, downloading some files for another pc, and CrystalDiskMark 8.0.4 benching the drive. To me, thats a win for 20 bucks and change.