While reading one of the threads someone suggested a web page about using sand to cool hard disks, the website http://members.fortunecity.com/bluehat1/heatsink.html
also mentions creating your own passive psu, but states "CAUTION: if a fire is caused for some reason, and it is suspected that a modified AC device might have caused it, then insurance companies won't pay anything even if the aim of modification is to improve system reliability, cooling and fault tolerance. Having a modified PSU in your house nullifies your fire insurance." just wondering whether this is the case. Do anyone make fanless 300w psu for sale in the uk?