News [GamersNexus] Noctua updates DH-15 and new fans

gorobei

Diamond Member
Jan 7, 2007
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they skipped a step and went to 8 heatpipes. some other tweaks to finstack and an offset option for all previous coolers for amd die centering. it's sad that they have to makes such a twisted convoluted mess of the pipes to accommodate the absurd size of certain brand's graphics cards.

 

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
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sigh.... a case of MOAR is better...

i think it would of been better to utilize some kind of evap chamber, but i don't know how well those work in a side position.
 

Fallen Kell

Diamond Member
Oct 9, 1999
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I'm not 100% convinced this is a more is better heatsink, in as much as it is, there is some tech behind it as well. The upgrading of the fans to push/pull more air through a radiator is what let them increase the density of fins within the heatsink's towers compared to the old version. And with that density increase, it made a lot of sense to see about optimizing the number and location of the heatpipes to better distribute the heat into the denser heatsink.

It really wouldn't surprise me that the new version would be able to handle an additional 30-50W over the old version (possibly even more). Will it be the king of air CPU coolers? I don't know, but it will probably be pretty close, especially for the SPL level. It won't beat water cooling for overall, but it also doesn't run the same risks that a water cooler does, and can probably be setup quieter than a water cooling system (pumps are still louder than optimized fans). And it will be much easier to install and maintain than custom water cooling, so I suspect it will sell well once it is finally on the market next year.
 

gorobei

Diamond Member
Jan 7, 2007
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GN update on G2
prototype thermosyphon and psu

im amazed they are attempting a syphon with flex tubing.
 

StefanR5R

Elite Member
Dec 10, 2016
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went to 8 heatpipes. some other tweaks to finstack and an offset option for all previous coolers for amd die centering.
Plus, they announced three SKUs with different finish of the cold plate: low/ standard/ high convexity. Apparently, customers will need to select the right model out of these three which best matches their particular CPU. (I don't know if this was mentioned in the GN video which you linked; haven't watched.)

A showcase of the Pareto principle.

Here is a news outlet with a few press slides from Noctua:
https://www.computerbase.de/2024-06...ipes-mehr-flaeche-und-zwei-neue-nf-a14x25-g2/ (article is in German, but Noctua's slides in English of course)
 
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Fallen Kell

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Oct 9, 1999
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Plus, they announced three SKUs with different finish of the cold plate: low/ standard/ high convexity. Apparently, customers will need to select the right model out of these three which best matches their particular CPU. (I don't know if this was mentioned in the GN video which you linked; haven't watched.)
I don't remember if they specifically spelled that out, but they certainly went over the different plates and how they interacted with the difference CPUs, especially the Intel ones as they have found that the retention method that holds the CPU to the motherboard is causing the integrated heat spreader to warp/bend on most of the Intel CPUs, creating a concave dip in the center of the chip (almost like a mini-halfpipe), and that over time it gets a little worse. The AMD CPUs do not suffer nearly as bad a deflection as they have an even thicker heatspreader this generation compared to last and that has added a lot more rigidity.
 

gorobei

Diamond Member
Jan 7, 2007
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Plus, they announced three SKUs with different finish of the cold plate: low/ standard/ high convexity. Apparently, customers will need to select the right model out of these three which best matches their particular CPU. (I don't know if this was mentioned in the GN video which you linked; haven't watched.)

A showcase of the Pareto principle.

Here is a news outlet with a few press slides from Noctua:
https://www.computerbase.de/2024-06...ipes-mehr-flaeche-und-zwei-neue-nf-a14x25-g2/ (article is in German, but Noctua's slides in English of course)
they covered the concavity issue with Jakob Dellinger from noctua in the video. GN had already been looking into the mating effect of the IHS from intel vs amd and have an earlier video where they worked with scythe to test the effect of matching the surfaces. the scans visualize the actual severity of the concavity.
 

TitusTroy

Senior member
Dec 17, 2005
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can the new NF-A14x25r G2 fans (round version) currently available be used as case fans or is that only meant to be used on CPU coolers like the NH-D15?...do I need to wait for the square version coming in September?
 

Blazer7

Golden Member
Jun 26, 2007
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can the new NF-A14x25r G2 fans (round version) currently available be used as case fans or is that only meant to be used on CPU coolers like the NH-D15?...do I need to wait for the square version coming in September?
According to Noctua's site the NF-A14x25r G2 fans can be used in cases but I don't think that it's that simple. If it was then why launch a square version, right? A few days ago I got an NF-A14 just to be on the safe side. I would wait if I were you.
 

TitusTroy

Senior member
Dec 17, 2005
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According to Noctua's site the NF-A14x25r G2 fans can be used in cases but I don't think that it's that simple. If it was then why launch a square version, right? A few days ago I got an NF-A14 just to be on the safe side. I would wait if I were you.

the NF-A14 is what I normally use for my 140mm case fans but I hear good things about this new fan...you're right as far as why would Noctua release a square one next month if they both were the same in terms of functionality

anyone have any confirmation on whether these round versions can be used the same as the NF-A14 as far as case fans?
 

Blazer7

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Jun 26, 2007
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They most certainly can but judging from their unique shape compatibility with all cases is not guaranteed. These fans are so new that only early adapters of the NH-D15 G2 can test them as case fans but it still comes down to your case. My take is that if your case is kinda roomy and you use any of Noctua’s anti-vibration stuff like the NA-SAV2, which will lift them a couple of mm you’ll probably be fine. Have in mind that these fans are mounted using the same holes like the 120mm fans.

AFAICT their overall dimensions fall within those of a typical 140mm fan.
 
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TitusTroy

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Dec 17, 2005
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They most certainly can but judging from their unique shape compatibility with all cases is not guaranteed. These fans are so new that only early adapters of the NH-D15 G2 can test them as case fans but it still comes down to your case. My take is that if your case is kinda roomy and you use any of Noctua’s anti-vibration stuff like the NA-SAV2, which will lift them a couple of mm you’ll probably be fine. Have in mind that these fans are mounted using the same holes like the 120mm fans.

AFAICT their overall dimensions fall within those of a typical 140mm fan.

I'm using the Fractal Design Torrent case...so these new fans use the 120mm holes in the case and not 140mm?

I think it's probably safer to just get the NF-A14 fans...those are still excellent overall 140mm fans and it's also cheaper
 

Blazer7

Golden Member
Jun 26, 2007
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I'm using the Fractal Design Torrent case...so these new fans use the 120mm holes in the case and not 140mm?

That's right.

I think it's probably safer to just get the NF-A14 fans...those are still excellent overall 140mm fans and it's also cheaper

This is what I did. Can't go wrong with that but if you still want those little improvements the new fans offer you can wait. At the very least when they come out the NF-A14 may get a bit cheaper.
 
Last edited:

TitusTroy

Senior member
Dec 17, 2005
335
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They most certainly can but judging from their unique shape compatibility with all cases is not guaranteed. These fans are so new that only early adapters of the NH-D15 G2 can test them as case fans but it still comes down to your case. My take is that if your case is kinda roomy and you use any of Noctua’s anti-vibration stuff like the NA-SAV2, which will lift them a couple of mm you’ll probably be fine. Have in mind that these fans are mounted using the same holes like the 120mm fans.

AFAICT their overall dimensions fall within those of a typical 140mm fan.

I e-mailed Noctua and this is the response I got:

Thank you very much for contacting us.

The only difference between the round framed fans and the square framed version is the mounting, when case airflow is concerned. As long as your case has 120mm as well as 140mm case fan slots there will be no difference in performance between the square and round frame versions.

The real difference is when using the fans on a watercooling radiator as the round frame will not cover the whole of the radiator air can escape where the corners of the frame would be for the square frame version. With the square frame version air cannot escape between fan and radiator which will lead to better cooling performance.

Aesthetically you might want to wait for the square frame version which is currently scheduled to be released in September.
 
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Soulkeeper

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Nov 23, 2001
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I also have a Fractal torrent case and was wondering about larger fans.
The specs for the case list: 7x 120/140 mm or 4x 180 mm
The current fans that came with the case are starting to make some noises.
The price of 7 fans plus 2 for the heatsink is just intense.

Anyone heard anything about noctua releasing 180mm versions of this new G2 fan ?
 

Fallen Kell

Diamond Member
Oct 9, 1999
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Just having 7 fan mount points doesn't mean you need 7 fans in a case. Heck I had a case that had 12 fan mount points, but you would never use them all at the same time as the airflow would be chaotic.

Most setups would use two or three front case fans and possibly fit a radiator for a water cooling loop at the other location (which would indeed have fans on it... but these would be also cooling the CPU and/or GPU).

That being said, I have not heard of 180mm fans from Noctua. Those fans are still too niche market to draw larger companies into it. When 40-50% of cases have 180mm fan mounts, we can expect to see some of the companies like Noctua, Scythe, and Corsair (Corsair possibly sooner if they release a case that uses 180mm fans).
 

Soulkeeper

Diamond Member
Nov 23, 2001
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You make a good point, I could block off or just not use fan mounts.
Thanks.
180mm would be nice, but I guess the difference isn't that massive.
 
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