Benchmark Reviews posted a review on the Antec Notebook Cooler 200

Convection is when moving air transfers heat to or from a surface. This is the method used by most laptop coolers to keep your CPU, GPU and other critical components from overheating. There are three major factors to effective cooling (or heating), namely temperature difference, surface area, and air flow. Any differences in these factors will lead to differences in performance, even for the same cooler. The Benchmark Reviews team tries hard to provide you with fair and repeatable testing. The Antec Notebook Cooler 200 uses all three factors to achieve effective cooling with minimal power. Our tests show which of those factors makes the biggest difference. We also consider ergonomics, looks and quality.

Antec Notebook Cooler 200 Review