When planning to push the best CPU beyond its factory-set limits, you’re going to require some serious cooling. Air coolers that consist of a heatsink and fan are generally good enough for standard use, but when you’re looking to up clock speeds and power draw, a closed-loop all-in-one (AIO) liquid cooler is the preferred option. In this guide, we’ll be taking a look at some of the best AIO liquid coolers you can buy to help take the heat away from the CPU.