Cooling KMPKT Heatsink and Fan Poll

How much would you pay for a full copper L9i style heatsink and fan (i.e. Fair Market Price)?

  • Less than 39.99 USD

    Votes: 10 4.7%
  • 39.99 USD

    Votes: 19 8.9%
  • 44.99 USD

    Votes: 31 14.5%
  • 49.99 USD

    Votes: 78 36.4%
  • 54.99 USD

    Votes: 29 13.6%
  • Over 54.99 USD

    Votes: 47 22.0%

  • Total voters
    214

Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,935
I think I'll probably go the route I did with my heatsink and just find an aerodynamics engineer with relevant background to do the design. In the meantime I'll probably just go with Yate Loon's 92x15 fan at launch as it seems to work quite well and noise doesn't seem to be all that big an issue from my preliminary testing.
 
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Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,935
Hypothetically silver conducts heat approximately 6.5% better than copper while copper provides approximately double the performance of aluminum. The fun part of this equation is that aluminum costs six US cents per ounce, copper costs 19 US cents per ounce while silver costs 16.43 US dollars. This means that a 20 dollar aluminum heatsink would likely cost close to 50 USD if made from copper and approximately 4300 USD if made from silver - any chance you want to be the first to try out a silver heatsink?

;)
 

Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,935
If the AM4/115X version works well, then I will be looking at the applications of this heatsink design in both servers and higher end workstations. I think it will actually scale better with larger chips and dies than it does with standard desktop processors. I haven't looked at the particulars, but I am hoping I can make a variant that will accommodate both Threadripper and Socket 2066 after I have the 115X/AM4 into production.

One of the fundamental advantages of my design over existing top-down heatsinks is how exhaust air is handled. In the case of servers in particular, I am hoping enclosure fans could be run at a much lower rate as a result of using my cooler design. The obvious advantage of this would be considerable electricity savings for larger operations.

As a side note, if anyone here could sufficiently explain how chassis cooling in servers typically works and how chassis airflow is handled I would be pretty appreciative. I have read up on the fundamentals, but more specific knowledge is always welcome.
 

Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,935
Along the lines of TR and 2066, can anyone tell me if we could actually even fit a 92mm cooler on either? It looks like 2066 would manage one (about 100mm x 100mm area), but TR4 looks like it might be too narrow. If there is adequate room for say an L9i to fit, then I might just release an aftermarket baseplate for TR4/2066 since it will be swappable (and TIM swappable!)
 

bledha

Airflow Optimizer
Feb 22, 2017
307
268
As a side note, if anyone here could sufficiently explain how chassis cooling in servers typically works and how chassis airflow is handled

Not sure if I can sufficiently explain but I would be happy to offer my experiences working in enterprise situations. Your typical server chassis runs cooling front to back, if there is active airflow to be had in the first place. In almost all server boxes I have personally deployed there is just a(n) exhaust fan(s) populated in the back to just get that hot stuff outta there - I have so rarely seen intake fans in these applications that I can't even remember...

That being said those CPUs of course need cooling - and I have not seen anything applied to these other than short, fat little towers with at maximum 80mm fans pushing air through them. Sometimes, very rarely, top down - still anemic looking little aluminum blocks. In this case I have always seen horizontal flow work better than downward for the CPU and the VRM, etc. These stock coolers often come with server boards and/or server grade CPU's, or the chassis - at least they did in the past when I was working on them. They are the stock cooling solution equivalent and they work, sure, but of course they are loud.

Something like this:


Something important to note, from my experience there is never really any other cooling solutions applied to server boxes in enterprise environments. The stock cooler that is included with a purchases from a major company, like HP, almost always is what the IT staff implement when building. Not only is it easier, but it is cheaper, and it is hard to justify to your CFO that you need the coolest all copper or innovative cooling solution for your server farm. From an economic perspective, nowhere I have worked would even consider buying an aftermarket solution for the cooler in the first place. That, and I have never rolled out racks full of server boxes to any room that wasn't air conditioned in the first place. So, maybe there would be some comparatively smaller electrical savings to be had by turning exhaust/enclosure fans down some hundred RPMs, but the places I worked at would laugh me out of the room if I mentioned it as they would just leave the AC on, and take all the fans out altogether.

For these reasons it seems like the aftermarket server cooling solution is best suited to really small server setups without climate control, hobbyists, or something like Google's warehouse monsters. With the big ones, however, would have to convince them to ditch all that previous capitalization.

Then again, I really have no idea about markets or anything - so I hope this has been even slightly useful!
 
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SilverFox18

Trash Compacter
Sep 29, 2017
41
47
Kmpkt - are you contemplating releasing the cooler on its own - and potentially develop the fan later on… I appreciate that you want to provide a complete 'package', (not a 'frankenstein'). However, developing a fan will take some months… and a considerable amount of money or horse-trading to get there. The cooler on its own - appears (from your feedback), performing thermally very well and conceivably quite close to coming to market (Q1/Q2 2018)? There is a clamour for a high performance LP cooler as you know… ;) All prepared/willing to attach alternative fans (which there are lots to choose from). I am sure this has crossed your mind - but it might be interesting to conduct a poll and see if there is a consensus?
 

Hifihedgehog

Editor-in-chief of SFFPC.review
May 3, 2016
459
408
www.sffpc.review
Hypothetically silver conducts heat approximately 6.5% better than copper while copper provides approximately double the performance of aluminum. The fun part of this equation is that aluminum costs six US cents per ounce, copper costs 19 US cents per ounce while silver costs 16.43 US dollars. This means that a 20 dollar aluminum heatsink would likely cost close to 50 USD if made from copper and approximately 4300 USD if made from silver - any chance you want to be the first to try out a silver heatsink?

;)
People have gold, diamond-studded iPhones, so... ;)
 

rcodi

SFF Gamer
Aug 5, 2017
176
165
Currently tendering prototyping contracts. 3D printed is out at 1600 USD per heatsink!