"Computer Silencing has gotten quite serious in recent years. Low dBA Fans, Heat Pipe CPU Coolers and Sound Proofing are the main products a Silent PC would contain. However, there is one area that should probably be tackled first, this is, Hard Drive Silencing. The churning of Hard Disks is quite possibly the most annoying sound for most enthusiasts; this is why Noiseblocker have created the 'NB-X-Swing' - a Dual Hard Disk Drive Noise Reducer."