Start here for a quick overview of the site Randomblue Randomblue. Stack Exchange network consists of 176 Q&A communities including So it's well worth trading off a bit of theoretical best temperature to get a better way of transferring the heat.Helium is good because although it doesn't take much heat to evaporate it, the resulting gas is very cold, and has lots of heat capacity.

This can be favorable in cases where it is very difficult to directly connect a cooler to an application due to whatever restriction there may be (safety, space, noise, vibration, rotating devices etc. The other options don't really produce that lovely gas, so won't be an improvement.Nitrogen ought to be better than it is, but has something called the leidenfrost effect. Instead, the aim is to keep the silicon junctions cool. If the gas is pressurized (preferably in a range of 10-20 barg), sufficient density is available for proper heat transfer.This website uses cookies to ensure you get the best experience on our website. But the heat flow is very roughly dependent on the temperature difference.

Electrical Engineering Meta I'm not 100% sure, but I think most of the other low boiling point liquids are the same.So helium will be hard to beat. I have never got anything to work under maybe around 230K@PlasmaHH There are videos of Arduinos and Raspberry Pis submerged in liquid nitrogen all over youtube. Read more about our Learn more about hiring developers or posting ads with us The difference in flow rate between He and Xe is about 100xThanks for contributing an answer to Electrical Engineering Stack Exchange! DH Industries has a long and strong reputation with respect to designing and supplying cooling systems that utilize gaseous Helium as a coolant.

Kelvin just means "degrees centigrade above absolute zero".So you can probably tell right away, most of these options don't provide anywhere near enough cooling power to be useful for overclocking.When overclocking, the aim isn't actually to get the core as cold as possible. asic cooling. In reality, no matter which of the cooling methods you choose, you probably won't get the surface of the chip down to the temperatures described above. Stirling’s SPC-1 and SPC-4 cryogenerators (cryocooler) provide cryogenic cooling power in the range of 500 – 4,000 Watt at 77K. Overclocking the very latest CPU to the practical limits will also be more expensive than distributing the processing into multiple CPUs where this is possible. That cold gas will flow over the chip as it boils and carry away lots of heat. LHe is only used on CPUs with absolutely no cold bug, such as AMD’s Phenom II stuff. To do that you have to get the heat to flow out through the chip, and into the surrounding coolant, then carry it away. Restrictions that you might have with other fluids like liquefaction and or freezing are no issue with Helium gas. In the realm of personal computers, this method of cooling is seldom used in contexts other than [[overclocking]] trial-runs and record-setting attempts, as the CPU will usually expire within a relatively short period of time due to temperature [[Stress (physics)|stress]] caused by changes in internal temperature. Better heat exchanger designs might be worth some effort though.Liquid Helium is a very poor coolant unless you really want to go to absolute zero. By using (pressurized) gaseous Helium the customer is able to “decouple” his cooler from the application. By clicking “Post Your Answer”, you agree to our To subscribe to this RSS feed, copy and paste this URL into your RSS reader.

@DmitryGrigoryev: Whats their junction temperature? Electrical Engineering Stack Exchange works best with JavaScript enabled 10 Kelvin. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under The technical properties of helium II (‘superfluid’ helium) are presented in view of applications to the cooling of superconducting devices, its pa rticularly in particle accelerators.