The corsair obsidian series 550d has been carefully engineered for noise reduction the front and side panels are insulated with sound dampening material and the hard drive trays and fans have soft silicon mounts to absorb vibration the top and side panel vents are covered for noise reduction if yoursquore not using them to install your own fans and even the intakes are angled to reduce air noise the rigid stamped steel and brushed aluminum case holds some remarkable technology that makes