Passively cooled threadripper/xeon W

By: Jouni Osmala (fname.sname.delete@this.aalto.fi), August 15, 2019 5:58 am
Room: Moderated Discussions
Adrian (a.delete@this.acm.org) on August 15, 2019 3:47 am wrote:
> Jouni Osmala (fname.sname.delete@this.aalto.fi) on August 15, 2019 3:12 am wrote:
> >
> > Found a German company that specializes to passively cooled PC:s and makes their own custom cooling
> > solution for PC:s for mass market. And fully custom cooling/mounting for special projects.
> > They can put 2080 and Threadripper into a system. Unfortunately they haven't upgraded the
>

>
> None of these problems exist for larger computers, i.e. for Mini-ITX and larger cases.
>
> In such large computers you can use large low-noise fans, which cannot
> be heard if the case has good enough acoustic insulation.
>
> Moreover, good-quality large fans can have a very good reliability, i.e. a lifetime
> of at least 10 years is easily achievable and they are easy to replace anyway.

> In conclusion, while for small computers I also always attempt to use only fanless computers,
> for large computers I do not believe that it is worthwhile to accept the much larger
> size & weight that is required for a fanless computer at any given TDP.


I disagree about the size but not about the weight, which is mostly dependent on personal fitness. I measured the extra volume my cramped midtower case made by nexus takes to insulate better for noise. Convection heatsink of that size can emit 25W per degree of difference between ambient and the heatsink. Assuming ambient around 20C, you can emit atleast 750W with reasonable temperatures for the components. This assumes fanless system design, not trying to put fanless individual components inside the case, but use heatpipes to transfer the heat to the case side panel which operates as heatsink.
Compulab airtop3 has high enough total power in a very small form factor that scaling its gpu 160w heatsink to 250w and upgrading CPU heatsink to that wouldn't make it particularly large design. Here's its comparison to other small form factor PC:s.
https://www.youtube.com/watch?v=35OyZzCvG0g&t=1m22s

They would also need to increase PSU size for that also.

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