Editing Computer cooling (section)

===Liquid helium===
[[Liquid helium]], colder than liquid nitrogen, has also been used for cooling. Liquid helium boils at {{convert|-269|°C|abbr=on}}, and temperatures ranging from {{convert|-230|to|-240|°C|abbr=on}} have been measured from the heatsink.<ref name="liquidhelium">{{cite web|url=https://www.youtube.com/watch?v=wB0JodKgZ0A|title=AMD Phenom II Overclocked to 6.5GHz – New World Record for 3DMark|last=AMDUnprocessed|date=14 February 2013|via=YouTube|access-date=1 December 2016|archive-url=https://web.archive.org/web/20160712065612/https://www.youtube.com/watch?v=wB0JodKgZ0A|archive-date=12 July 2016|url-status=live}}</ref> However, liquid helium is more expensive and more difficult to store and use than liquid nitrogen. Also, extremely low temperatures can cause integrated circuits to stop functioning. Silicon-based semiconductors, for example, will freeze out at around {{convert|-233|°C|abbr=on}}.<ref name="freezeout">{{cite web|url=http://www.extremetemperatureelectronics.com/tutorial3.html|title=Extreme-Temperature Electronics (Tutorial – Part 3)|website=extremetemperatureelectronics.com|access-date=11 March 2012|archive-url=https://web.archive.org/web/20120306214055/http://www.extremetemperatureelectronics.com/tutorial3.html|archive-date=6 March 2012|url-status=live}}</ref>