In our noise level tests we switched off all the case fans and replaced the AMD Radeon HD 7950 graphics card with a HD 5550 passive model so were just taking into account the noise generated by the cooler fans themselves. We measured the noise level with a Digital Noise Level meter at a distance of 1m from the front of the case.
We were quite pleased with the noise level performance of the H55 in this test. The noise emissions were lower than the H60. We expect that this is because the fan can’t spin so fast.