Installation, Testing and Comparison:

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Installation is simple, four screws and your done, the Cool Wheel mounts to the bottom of your hard drive to the pre-existing screw holes.

Once mounted you can see that it makes you hard drive fairly large, and depending on your case configuration might not allow you to install another hard drive in the space below it. The Cool Wheel does include a pass-through Molex connector so you won't loose any connectors.

Ambient room temperature during testing was 19.1C. I used FanSpeed to get the temperatures of my hard drive before and after installing the Evercool Cool Wheel.

Temps:

Without Cool Wheel: 25C

With Cool Wheel: 22C

Well you can see it does work as it is supposed to, three degrees cooler is better than nothing, and I think having a supply of fresh air can be a good thing as well. The noise level is actually very low, when everything else is running you can't hear the Cool Wheel at all, it does not add any extra noise to the system.