Noctua's massive 1.5Kg fanless cooler goes into mass production

Mr Evil said:
I'm interested in seeing how well this performs when cooled by a nearby case fan. I currently have a Thermalright Le Grand Macho configured like that, and it works quite well, but the case fan needs to spin over 1000rpm to keep a 5950X cool at full load, which is plainly audible. If this one can do better than that, it might be worth changing, despite the less manly name.

One thing I'm not sure about from the photo is if it will be possible to rotate it 90° for front-to-back airflow, or if they've optimized it purely for natural convection bottom-to-top.
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I wish to subscribe to your newsletter heh :) I have the same cooler, photo link in my sig, the Le Grand Macho is flush touching against the back of my case. I can't remember what temp mine maxes out at but mine has a fan, it only ramps up when the GPU goes over 60C, like all the other fans in my case, just to help airflow when gaming.

Good question about 90° rotation, you would want that if you just had case fan airflow. I don't think there is enough room in my current case for that.

Video when it was still at prototype stage 18 months ago.
 
Actually after testing again I think I'm in the market for a new cooler because my Thermalright Le Grand Macho isn't seating properly on my 3600, its ok for normal use tbh but when stress testing without AVX/2 it gets to 87C and with AVX it's 95C/throttling which isn't right for this cooler. Google shows many others having the same issue with AM4 socket on this cooler. @Mr Evil you may be having the same thing.

If this thing does fit my build I may get this, change PSU to the front, intake fans at the bottom, venting out the top, GPU cooling would be better too, I have seen a couple of photos of this so it can be done.
 
Mr Evil said:
I just did some quick testing using Prime95, since that allows AVX/AVX2 to be switched on/off. The absolute worst case was with 1 thread and AVX2, which initially peaked at 87°C, and made the fan ramp up to 1800rpm while drawing 105W AC. That wasn't reproducible though - subsequent runs with 1 thread only reached a peak of 79°C. I think the first run was hotter because starting from a low temperature made the fan take longer to ramp up. I'm content with that, especially since nothing I actually use the CPU for gets it that hot.

I have the curve optimizer set to -15 all cores, which helps it stay cooler.

With 32 threads to fully load the CPU, it only reaches 68°C, and draws 190W AC. AVX makes no difference, presumably because the CPU is limited to 140W regardless. Turning on PBO would no doubt allow it to boil itself here.
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Yeah fair enough. I'll check my settings. That's it really, stress testing is not real world, so I think I decided to stop worrying about it a year ago when the system was new. I should just to that again :) Originally I was going to wait for the Noctua fanless cooler before buying my next PC, but in the end I couldn't wait and since it took 18 months to come out I think that was a good decision. I shall probably be tempted when the reviews are out though :) or I should hold out until AMDs next big thing/AM5 socket upgrade.

Mr Evil said:
p.s. That's a nice keyboard you have.
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Thanks, it was one of the rabbit holes I went down while I was furloughed lol.
 
I think (one of) the heaviest coolers is/was the TRUE Copper at 1.9Kgs.. before fan :)

http://thermalright.com/product/true-copper/

But yeah, remove large heatsinks before moving house!

This Noctua Fanless cooler has been pushed back to Q2.

I don't think official specs have been released so people are only quoting from prototype specs, so we won't know for sure until it arrives.
 
chroniclard said:
Am unsure of the point, unless for super sensitive hearing I guess?
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Yeah some people are sensitive to noise. The world of silent computing is growing I think. Maybe its ok for some noise while gaming but when you aren't, there could be total silence etc. (from the computer anyway :))
 
https://www.fanlesstech.com/2021/06/noctuas-nh-p1-is-official.html

“The NH-P1 is our very first passive cooler, and it should be easy to see that we didn’t just take a regular heatsink and omit the fan”, says Roland Mossig (Noctua CEO). “A lot of engineering work went into designing this unit for fanless operation from the ground up and we’re truly proud of the end result. In our completely fanless demo system, the NH-P1 cools an Intel Core i9-11900K running Prime95 at more than 3.6GHz – this is a lot of processing power and a whopping 125W kept in check with zero fan noise!”

The NH-P1 is 158 x 154 x 152 mm and 1180 g (slightly lighter than expected). This historic product is available right now for $109.90 and 109,90 euros.
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Yeah you can somewhat undervolt the Intel CPUs to tweak the temps a fair amount. I think I'll stick with my Le Grand Macho RT with fan for now, when its not mining/gaming my whole system is pretty quiet.
 
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