I picked this up for one of my laptops that tends to run hot when I'm putting it under a heavy load. Whether I'm running virtual machines, compiling code, editing video, or doing other CPU-intensive work, this cooler has made a noticeable difference in keeping temperatures under control.The first thing I noticed is just how much air it moves, likely why it's so heavy. The sealed design does a great job directing airflow through the bottom of the laptop, and it cools much more effectively than the typical cooling pads with a handful of small fans.I was also pleasantly surprised by the noise level. Even at higher speeds, it's actually quieter than the tiny cooling fans inside my laptop. You can definitely hear it when it's running at full speed, but it's more of a smooth airflow sound than an annoying high-pitched whine.The build quality feels very solid. It has a heavy-duty feel, the adjustable stand is sturdy, and the memory foam seal helps maximize airflow instead of letting it escape around the edges. The dedicated AC power adapter is another nice touch since it delivers full performance without draining the laptop's battery or tying up USB power.The three-level height adjustment also makes it more comfortable to use for long periods, and the extra USB ports are handy for connecting a mouse, keyboard, or other peripherals. The RGB lighting is there if you like that sort of thing, but I was more interested in the cooling performance.Overall, this is an excellent cooling pad for laptops that regularly run hot or spend a lot of time under heavy workloads. It's well built, moves a tremendous amount of air, runs quieter than I expected, and does a great job keeping temperatures under control. Kind of expensive, but it also provides a lot of cooling.