Summary: I have tried several different coolers, but I am very picky about noise levels. I had returned a few other, more expensive, models but the massive cooling fan on this one really gets the job done at a low RPM. Keeps everything cold without sounding like a harrier jet taking off. Great product.
Summary: Since this is Thermaltake, I expected the highest in quality. I did notice plugging it directly into the computer, the fan ran. However plugging it into a designated USB Hub for USB Power, the fan speed increased dramatically. I have a completely rebuilt XPS M1730 that weighs in at 11 pounds. So this massive cooler is made for such a beast.
Summary: I purchased this because I have a Sony Vaio laptop that gets extremely hot very quickly. This unit with it's 230mm fan runs extremely quiet and I have not had a heat related issue since I started using this. I recommend them very highly to my customers for their laptops as well.
Summary: The initial product I received was defective and caused my system to power down, but crib death happens. They replaced it easily and the next one has worked well. It is quiet and draws air well. It has brought my core temps down from the low to mid 60C to an acceptable 50C. It has allowed me to keep working safely!