The IETS GT500 V2 (Hub+RGB) has the most powerful fan on this list, with blades rotating at 5,000 RPM. Nothing on the guide comes close to this speed, which creates a wind tunnel instead of a focused airstream.
The fan sits in the center of the cooling pad, instead of blowing air up towards the bottom of the laptop where it spins the air in a spiral pattern, sort of like a washing machine. This causes what the company describes as "360-degree undifferentiated cooling," which means air cools every part of a laptop equally.
Furthermore, the fan sits recessed in a pit surrounded by foam, an unusual design that promotes maximum cooling. The foam creates a vacuum seal with the bottom of your laptop that traps the circulating air. Together with the 360 fan, the GT500 V2 can cool even the most powerful gaming laptop. This model also has a three-port USB-A hub and RGB lights for extra bling.
The drawback to that high fan speed is this device gets really loud. The fan volume is the number one criticism seen on its Amazon reviews. IETS is well aware of this issue, and its product listing states noise can reach 65dB and "if you are sensitive to noise, please buy carefully." They're not hiding the fact the GT500 V2 sounds like a jet engine. If noise bothers you, buy something else.
IETS GT500 V2 Specs: Dimensions: 16.93 x 2.76 x 13.03 inches | Weight: 2.54 pounds | Max laptop size: 17.3 inches | Fan RPM: 5,000 RPM | USB passthrough: Yes | LED lighting: Yes