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Noctua passive CPU cooler now available for purchase, bold claims for cooling capability

7 hours ago, porina said:

Be interesting to see how it actually performs, but the comments on this thread are giving me a headache. Laws of physics are well understood. We need a lot of environmental information to estimate how this might perform and consequentially what it might support.

 

Similar to other passive designs, it has much wider fin spacing than coolers designed for forced airflow, to give the air a chance to move itself through it. Even a little forced airflow (e.g. from case fans) will help a lot with performance, although its ultimate performance with fans might not be as good as those designed for such.

 

Stock AMD 105W TDP CPUs run up to 142W PPT limit. If you use a cooler rated at exactly 105W expect to throttle back to base clocks and kiss turbo goodbye.

Yeah, and that 142W goes out the window with XFR which is why I'm yanking like 172W from the board through mine. PBO scalars and undervolt are kind of fun to play around with to get the boost to really ramp up and hold clocks. 65W parts can pull 88W I think, and even with XFR they should be under the 105W TDP of the passive cooler and work kind of good. 

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I wonder how effective this could be if you just put regular (not the "low speed") fans on it in push pull. If it has so much cooling capacity in passive, giving it proper wind through the fins should dramatically improve that. And since fins are wide apart, noise should be better because you don't really need much pressure to move air through...

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I keep wondering if they haven't posted the wrong information, because the 9900K certainly doesn't qualify as having "low to mid power consumption", with Turbo Boost, it's among the highest on the market. Also, they have their own "Noctua Standardised Performance Rating" (the higher the number, the better) as opposed to using TDP, the highest being the NH-D15 with a value of 183. The lowest value in the list is 42, and guess which of Noctua's CPU coolers that is - it's the NH-P1. The lowest above that is the NH-L9i with a value of 59.

https://noctua.at/en/noctua-standardised-performance-rating

I really doubt that this can cool a 3950X or 9900K when they boost.

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This cooler paired with literally 1 case fan would be fine...

Is it plugged in? Is it turned on? Are you sure? No, really. 

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Wonder why they put holes in it.

Is it so it’ll work in a horizontal configuration? (Motherboard parallel to the table)

Please keep in mind:

I may be stupid.

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2 hours ago, Kaboom1 said:

Wonder why they put holes in it.

Is it so it’ll work in a horizontal configuration? (Motherboard parallel to the table)

Vertical channels create accelerated natural convection, speeding up rate at which air flows through the fins because of heat itself. If you just have bunch of fins, heat will slowly move in all directions from the fins, not creating any draft and be less effective as a result. Similar principle is used for electric home heaters like Glamox electric radiators.

 

8 minutes ago, Joduko said:

Should have used copper.

Not really. Copper is super heavy and expensive compared to aluminium. Would you pay 180€ or 200€ for such cooler and still risk breaking motherboard by its weight? It's also generally great at accepting the heat, but aluminium is actually better at releasing it. I'm fairly certain I read about this somewhere...

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15 minutes ago, RejZoR said:

Vertical channels create accelerated natural convection, speeding up rate at which air flows through the fins because of heat itself. If you just have bunch of fins, heat will slowly move in all directions from the fins, not creating any draft and be less effective as a result. Similar principle is used for electric home heaters like Glamox electric radiators.

 

Not really. Copper is super heavy and expensive compared to aluminium. Would you pay 180€ or 200€ for such cooler and still risk breaking motherboard by its weight? It's also generally great at accepting the heat, but aluminium is actually better at releasing it. I'm fairly certain I read about this somewhere...

There are a bunch of different properties that interact to get a final “how much heat does it move?” Thing.  The net favorite is copper, but you make strong points about weight and cost.  Ironically aluminum used to be more expensive than gold and was used in jewelry. What made it cheap was an electricity based mass refining process.  Aluminum oxide is an extremely common compound.  The process uses a great deal of electricity though which is why recycling aluminum is profitable.  Another odd factoid.  “Transparent aluminum” has been around for a very very long time.  It’s better known as sapphire.

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Problem is, we don't really have any half decent passive graphic cards anymore. I mean surely someone is making them, but they are so niche it's probably even harder to find than back in the day when they were 75W things for top of the line models and not 350W...

 

It is interesting idea though. Passive cooled CPU, passive cooled GPU, passive cooled PSU, we now have SSD's to complement that instead of old noisy HDD's. But in the end, only reason one would go this route is dust collecting which should be less of an issue in passive system. Because noise wise, you can make system with fans that will outperform any passive cooled system with ease and still be entirely inaudible. I mean, has anyone tried running quality fans at like 500 RPM ? I honestly can't hear my Silent Wings 3 at those speeds and I sleep in the same room. Usually I need to check power LED indicators to even see that system is actually running.

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1 hour ago, RejZoR said:

Problem is, we don't really have any half decent passive graphic cards anymore. I mean surely someone is making them, but they are so niche it's probably even harder to find than back in the day when they were 75W things for top of the line models and not 350W...

Make your own :D

 

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11 minutes ago, RejZoR said:

Problem is, we don't really have any half decent passive graphic cards anymore. I mean surely someone is making them, but they are so niche it's probably even harder to find than back in the day when they were 75W things for top of the line models and not 350W...

 

It is interesting idea though. Passive cooled CPU, passive cooled GPU, passive cooled PSU, we now have SSD's to complement that instead of old noisy HDD's. But in the end, only reason one would go this route is dust collecting which should be less of an issue in passive system. Because noise wise, you can make system with fans that will outperform any passive cooled system with ease and still be entirely inaudible. I mean, has anyone tried running quality fans at like 500 RPM ? I honestly can't hear my Silent Wings 3 at those speeds and I sleep in the same room. Usually I need to check power LED indicators to even see that system is actually running.

I’m not sure if this amounts to agreement, clarification, or statement of exceptions.
 

I can think of two off hand but they’re both primarily commercial/industrial.  

 

1.) if there is an extremely dusty work area fans can simply cause problems.  a system with no fan can have massive longevity advantages partially because they can often be sealed.

 

2.) There are situations where actual zero Dba is actually needed. Merely inaudible won’t do it.  For these a fanless system could be the only thing that could even be used.  
 

 

There is also one consumer application but it’s been a solved problem for years.  A fanless HTPC has been an obvious application for many years, but that particular system can actually be accomplished with a 730, which is the largest fanless card I know of.  It’s been around for a long time though. I have wondered if a larger card could be done fanless.  A 1650 uses about the same wattage as a modern cpu so it wouldn’t be a small thing. 

Life is like a bowl of chocolates: there are all these little crinkly paper cups everywhere.

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37 minutes ago, GoodBytes said:

Make your own

 

Not passive.  It has fans.

Life is like a bowl of chocolates: there are all these little crinkly paper cups everywhere.

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58 minutes ago, Bombastinator said:

I have wondered if a larger card could be done fanless.  A 1650 uses about the same wattage as a modern cpu so it wouldn’t be a small thing. 

https://www.palit.com/palit/vgapro.php?id=3494&lang=en

Palit makes a fully passive GTX 1650.

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1 hour ago, Bombastinator said:

Not passive.  It has fans.

My post was more for humor purposes...

 

But ok:

You can probably use these ultra-beefy GPU heatsink replacement, and not put the fan. Down volt a bit the GPU to get better temps, and you might be set.

The issue comes down to air flow, you might need to go with an exposed case designed, and not.. well.. a case, as you would have both the CPU and GPU creating massive amount of heat.

 

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On 6/7/2021 at 8:36 AM, TVwazhere said:

Wait, a Six year warranty? This seems kinda weird, as in, it seems kinda short. 

 

Considering there are no moving parts, how often do things like heat pipes break? Or do things like new mounting brackets fall under warranty as well (For things like the upcoming AM5 and LGA1200 sockets)?

It's because after 8 years (assuming the product won't be on sale past 2 years), Noctua doesn't want to keep spare stock for warranty replacement. As sale goes down, so is their warranty replacement stock. Keeping stock in a warehouse (even if you own the warehouse) has a cost associated to it.

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Posted (edited)
1 hour ago, GoodBytes said:

My post was more for humor purposes...

 

But ok:

You can probably use these ultra-beefy GPU heatsink replacement, and not put the fan. Down volt a bit the GPU to get better temps, and you might be set.

The issue comes down to air flow, you might need to go with an exposed case designed, and not.. well.. a case, as you would have both the CPU and GPU creating massive amount of heat.

 

I don’t think it would work for the gpu without a fan but only because apparently there’s a 1080ti under there which iirc pushed 200w. Probably fine for the 8700k cpu though not at the 5.0ghz OC dude was claiming. You can run a NH-15 with no fans at all and it can work for some smaller stuff.  Not a lot though. Would be interesting though.  See how much could be done passive.  Iirc scythe did some big ass passive coolers too a while back.  They weren’t super popular because they were so big and heavy they caused big motherboard problems.  Iirc I remember some pro gamer using one.  He managed to wedge the thing in a SFF case meant for travel that had this big handle on the top. Had to cut a big hole in the side of the thing to make it work but work it did.

Edited by Bombastinator

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1 hour ago, Random_Person1234 said:

https://www.palit.com/palit/vgapro.php?id=3494&lang=en

Palit makes a fully passive GTX 1650.

It’s short too. If that short a card would work passive I kinda wonder if one of those Arctic cooler replacement coolers could do it too.  They’re a lot longer.

found a review of the card but it’s stat based, and talks about it being an upcoming product.  Date for the article is 2020 https://www.guru3d.com/articles-pages/palit-geforce-gtx-1650-kalmx-review,1.html

 

They apparently came out though, or at least it appears that way.  There’s an eBay listing for one for $605 which is a lot more than the claimed sub $200 price int the review.  Could be fake I suppose.  It is eBay after all. Looking for a post release review now.  I’m curious how hot it gets.

Life is like a bowl of chocolates: there are all these little crinkly paper cups everywhere.

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If only the CPU cooler was in the shape of a hyperboloid to take advantage of the thermal laminar airflow. Think nuclear reactor cooling tower, or a chiminea.

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3 hours ago, Bombastinator said:

It’s short too. If that short a card would work passive I kinda wonder if one of those Arctic cooler replacement coolers could do it too.  They’re a lot longer.

found a review of the card but it’s stat based, and talks about it being an upcoming product.  Date for the article is 2020 https://www.guru3d.com/articles-pages/palit-geforce-gtx-1650-kalmx-review,1.html

 

They apparently came out though, or at least it appears that way.  There’s an eBay listing for one for $605 which is a lot more than the claimed sub $200 price int the review.  Could be fake I suppose.  It is eBay after all. Looking for a post release review now.  I’m curious how hot it gets.

In the Noctua video that is linked above in this thread, they do use a GTX 1650 KalmX.

Edit: Actually its the 1050 Ti KalmX, not 1650.

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2 hours ago, Random_Person1234 said:

In the Noctua video that is linked above in this thread, they do use a GTX 1650 KalmX.

Edit: Actually its the 1050 Ti KalmX, not 1650.

I didn’t watch that video very far.  The narrator’s voice has a particular use of sibilants I find grating when recorded for whatever reason.  Dunno why.  It just bugs me.   As a result I didn’t watch it for more than a few seconds. 

Life is like a bowl of chocolates: there are all these little crinkly paper cups everywhere.

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On 6/15/2021 at 1:46 PM, Bombastinator said:

Not passive.  It has fans.

There you go:

Maybe, LMG team can make a proper mount got the GPU, they seem to have all sort of tooling machines and materials.

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