Tweakers Australia has posted a review on the Thermaltake HardCano 3 and 5 heatsinks
This is where the HardCano 3 has an advantage over the HardCano 2. Instead of plugging the onboard fan into the speed controller, you can actually connect ANY fan in your system that you want to control the speed of. Perhaps the most suitable fan would be from your CPU cooler, as some models have the ability to send you deaf when running at full speed. Thermaltake's Volcano 7+ came with the same speed controller, and was an instant hit - the only problem was you needed to open your case to change the speed. With the HardCano 3 this wont be a problem, as you can easily connect any heatsink fan to the s peed controller and conveniently change the speed from the front of your PC.Read more
