If a fan is not desirable, because of noise, reliability, or environmental concerns, there are some alternatives. Some improvement can be achieved by eliminating all fans except one in the power supply which also draws hot air out of the case.
Systems can be designed to use passive cooling alone, reducing noise and eliminating moving parts that may fail. This can be achieved by:
- Natural convection cooling: carefully designed, correctly oriented, and sufficiently large heatsinks can dissipate up to 100 W by natural convection alone
- Heatpipes to transfer heat out of the case
- Undervolting or underclocking to reduce power dissipation
- Submersive liquid cooling, placing the motherboard in a non-electrically conductive fluid, provides excellent convection cooling and protects from humidity and water without the need for heatsinks or fans. Special care must be taken to ensure compatibility with adhesives and sealants used on the motherboard and ICs. This solution is used in some external environments such as wireless equipment located in the wild.
Other methods of cooling include:
- Water cooling
- Refrigeration, e.g. by Peltier effect devices
- Ionic wind cooling is being researched, whereby air is moved by ionizing air between 2 electrodes. This replaces the fan and has the advantage of no moving parts and less noise.
Read more about this topic: System Fan
Other articles related to "alternatives, alternative":
... a production rule of a context-free grammar (CFG) may have one or more ‘alternatives’ and each alternative may consist of a sequence of non-terminal(s) and/or terminal(s), or the alternative may consist ... If a simple parser is available for each of these alternatives, a parser combinator can be used to combine each of these parsers, returning a new parser ...
... an individual project, but it also examines the total costs and benefits for all alternatives or combinations thereof and treats them on an "equal footing." These alternatives include not only construction projects but ... Equal footing means that there is no discrimination against some alternatives based on political or ideological factors ... of the requirement to study objectively all potential alternatives ...
... choice, menu dependence arises when the evaluation of alternatives for choice or the mode of selection guiding choice varies parametrically with what ... a change in a decision maker's preferences among alternatives with the addition of irrelevant alternatives ...
... Ten Commandment Alternatives are alternatives to the biblical Ten Commandments ... Several alternative versions have been created, and no consensus exists as to a single authoritative version ...
... Lawn sweepers are an alternative to raking or the use of leaf blowers and garden vacuums ... They are also an alternative to lawn mower baggers or grass baggers which are generally more expensive and have a smaller capacity ...
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