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

CubanLegend

Steely-Eyed NVFlash Man
Dec 23, 2016
834
1,011
smallformfactor.net
The limted special edition stealth AXP100 was my jam BITD, never could find one for sale though. AXP100 is still the best performing SFF cooler I've used to date.

If only it could fit inside an S4 mini and within the confines of an ASUS z270i mobo.
 
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AleksandarK

/dev/null
May 14, 2017
703
774
This one is random, but it just hit me.

I have an idea for you how to compare aluminum vs copper heatsink.
It is pretty simple:
Just take aluminum heatsink made by extrusion and the same one made out of copper. Place them on CPU with some zipties, add a fan on top and there you have it. No need for expensive prototyping.
 
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Chrizz

Average Stuffer
Jan 23, 2017
74
81
This one is random, but it just hit me.

I have an idea for you how to compare aluminum vs copper heatsink.
It is pretty simple:
Just take aluminum heatsink made by extrusion and the same one made out of copper. Place them on CPU with some zipties, add a fan on top and there you have it. No need for expensive prototyping.

Aluminium heatsinks have different optimums than copper heatsinks in terms of fin-length, fin distance, fin thickness etc.
 

Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,936
Aluminium heatsinks have different optimums than copper heatsinks in terms of fin-length, fin distance, fin thickness etc.

Exactly this. If you just take an aluminum heatsink design and swap the materials to copper it will likely be much cheaper simply because you aren't having to retool to produce your units. By grace of being copper rather than aluminum you'll likely see some improvement in performance, but it certainly won't be performing optimally. If you want to make a proper copper heatsink you need to design it from the ground up with the appropriate materials, run simulations under various conditions that reflect the specific use of the heatsink and finally tool appropriately to produce it.
 

Bahn Yuki

Cable Smoosher
Sep 6, 2017
10
5
Has anything come out on this? BTW perhaps you should go smaller than 45mm? that way it could really make an impact as an alternative to the Noctua NH-L9i(a)
 

Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,936
The project is moving along quite nicely but I am not publishing any particulars of the project as I plan to patent the design if possible. Public disclosure of the design before I do this could compromise my patentability allowing a larger company to simply sweep in and steal my idea. What I can tell you is that I plan to do a 35-38mm variant to challenge the L9i as well as the 46-48mm variant. I plan to do the taller heatsink first as I feel it will serve more possible users that the 37mm heatsink (NFC just shipped their 500th case while combined sales of the Dan A4 SFX and Zaber Sentry total around 5000). Some fun facts on progress thus far:

- About half as many fins as the competitors
- Significantly lighter than other all-copper heatsinks
- On simulation, outperforms a full copper L9i by approximately 10 Celsius while cooling a 100W CPU (full copper L9i should perform close to the LP53 for reference)
- Hopefully adaptable to cool MXM GPUs as well as CPUs.
- Design scales very well with height (may eventually do a 1.5U variant as well).
 

Hifihedgehog

Editor-in-chief of SFFPC.review
May 3, 2016
459
408
www.sffpc.review
This progress of the project thus far sounds incredibly reassuring and I am highly interested in seeing if this might replace my ID-Cooling IS-60 with its upgraded Delta 120mm PWM fan (AFC1212D-PWM). In my particular use case, I would potentially want to install this heatsink in the other's place and replace the stock 92 mm fan with Delta's 92mm PWM fan (AFC0912D-PWM). If the thermal dissipation performance is as high as you are hinting at it being, this should prove to be the low-profile fan I have been hunting after all along. Best of luck as your R&D continues and you pursue patenting your design.
 
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Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,936
Currently undergoing the final revisions for prototyping. Hoping to have a working prototype within the next month and benchmarks shortly thereafter. Currently planning 115X and AM4 support, but if cooling is good enough I may consider 2011/2066 support as well (but I wouldn't hold my breath). Fun fact is that this prototype will only have 39 fins (as opposed to 70+ on most other 92mm coolers).
 

Vlad502

Airflow Optimizer
Nov 4, 2017
258
211
- On simulation, outperforms a full copper L9i by approximately 10 Celsius while cooling a 100W CPU (full copper L9i should perform close to the LP53 for reference)
...
- Design scales very well with height (may eventually do a 1.5U variant as well).
Nice. Can`t wait to see comparison

Fun fact is that this prototype will only have 39 fins (as opposed to 70+ on most other 92mm coolers).
Aaaah, what is this cooler with 70+ fins?
Noctua NH-L9i, Fin count: 55
 

McTeags

SFF Lingo Aficionado
Feb 18, 2017
130
148
Count me in too! Not that I really need it but I think it would be cool...Looking forward to a variant that can fit in an S4 Mini :)
 
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D

Deleted member 4696

Guest
Have you decided on total height for the taller of the two you are planning? You mentioned 46-48 and that you want it to be compatible with the Dan A4. It's worth noting that the cryorig C7 is 47mm and the height causes some turbulence with the Dan case. I imagine 44-45 is probably the tallest you want to go for compatibility. 46 could be OK but would probably need testing.
 

Kmpkt

Innovation through Miniaturization
Original poster
KMPKT
Feb 1, 2016
3,382
5,936
First prototype is planned to be 31mm + Fan height. That means 45mm with the Noctua 14mm fan and 46mm with any other 15mm fan. 45 is maximum cooler height for the new NFC S4M which is coming out, 47mm is the Zaber Sentry and 48mm seems to be everything else. I feel that this height best matches the complement of SFF cases available at the moment. I may also develop a custom fan for this heatsink if once I have my patents and preliminary testing in place I think I can secure government innovation grants for this project. I've already looked into doing this with Blacknoise/Noiseblocker and they've quoted me about 40K USD for R&D > <