Review on 🌬️ ARCTIC Liquid Freezer II 280 - High-performance All-in-One CPU AIO Water Cooler, Intel & AMD Compatible, PWM Controlled Pump, Fan Speed: 200-1700 RPM - Black by Josh Cooper

This cooler is not compatible with MSI AM4 motherboards by default. The back panel feet supplied by MSI are too big and therefore this cooler cannot be installed. The Arctic does not include the correct size backplate. Other motherboards may not find this result, but if you have an MSI and want to keep it, I guess look elsewhere. UPDATE: I was able to contact Arctic Support. As it turned out, the mount is constructive. I took her word for it and finished the install and lo and behold it was tight. Now if they would just mention it as a normal possibility, I feel like it would make my experience that much better. The 5900x idles at 35C in early tests, so it gets the job done.