4 ms·

Arctic uses a fan to cool another fan

46 points by LorenDB 2y ago

deleted 2y ago
[deleted]
ynniv 2y ago
That looks like an AI hallucination
- JDEW 2y ago
  Maybe that's how they came up with the idea.
layer8 2y ago
It’s fans all the way down.
ksec 2y ago
Is "Fan inside a Fan" a new design for DC? Or is it something available in hyper scale only to come out now with Arctic?
madihaa 2y ago
We found a way to make your nice large quiet fan have a squeel sound in 1 year so you have to replace it sooner.
- jsheard 2y ago
  This is designed for servers, noise is the least of its concerns. Everything in a datacenter has fans that sound like they're trying to launch the machine into orbit.
- Vecr 2y ago
  This is a server fan, it's already really loud.
- edm0nd 2y ago
  have you ever been in a DC? they loud af boiiiiiii
chrsw 2y ago
Yo dawg...
oez 2y ago
The title of this article really bugs me. It's only one fan, it's cooling itself!!
ipsum2 2y ago
Video: https://youtu.be/gfkeR9vfmNo?t=86 https://youtu.be/gfkeR9vfmNo?t=86
- B1FF_PSUVM 2y ago
  Thumb gets pixelated at 1:30 ...
eru 2y ago
> [...] 11.45 mmH₂O of static pressure [...] I don't think I've ever seen anyone use these units for pressure? What happened to Pascal?
- buildbot 2y ago
  Nearly all case fan brands use mmH₂O. No idea why, but that's what they do.
- tmtvl 2y ago
  He walked into a bar. ...I'll see myself out.
- VenturingVole 2y ago
  Someone said hectopascals and was, unfortunately, misunderstood. ... As per commenter below, will also see myself out.
- earleybird 2y ago
  Inches of water is sometimes seen for retail vacuums in shop & household use. I have no idea where it came from - perhaps marketing where it gives a buyer an easy to visualize physical model for comparative purposes.
- wongarsu 2y ago
  mmHg is reasonably common because that's how the first pressure gauges worked, and measuring how much a pressurized gas or liquid can move mercury against gravity is easy and reliable enough that this style stayed in use for 300 years [1]. But 0.8mmHg isn't a very impressive number, so at some point someone got the bright idea to use mmH₂O instead. [1] https://en.wikipedia.org/wiki/Mercury_pressure_gauge https://en.wikipedia.org/wiki/Mercury_pressure_gauge
- GuB-42 2y ago
  I have seen it a few times for vacuum cleaners. Anyways, the conversion is easy: 1 mmH₂O is g Pascals, g = 9.80665, the Earth gravity, often rounded to 10. It is actually easy to calculate: 1 Pa is 1 N/m² 1 N is the force needed to accelerate 1 kg at 1 m/s², the acceleration due to Earth gravity is "g", so, because F=ma, 1 kilogram-force under Earth gravity is g N. Density of water is 1 kg/L, a column of water 1mm high with a 1m² base has a volume of 1/1000 of a m³, or a liter, so that column weights 1 kg. Therefore that column exerts a force of g N on 1m², or g Pa. So 1 mmH₂O = g Pa =~ 10 Pa = 1daPa I have never seen the daPa used as a unit, but the daN is common, because 1 daN so close to 1 kgf (kilogram-force).
buildbot 2y ago
They have these in a smaller 80mm size, I have two - they are weirdly great? Relatively quiet at half speed and move crazy amounts of air, compared to other 80mm fans I have. The fan in the center cools the motor which I assume increases MTFB.
- jsheard 2y ago
  They're 38mm thick and adding extra thickness to fans improves performance by a lot, but for some reason consumer PC component brands have rarely ventured beyond 25mm until quite recently.
jeffybefffy519 2y ago
Quick someone tag linus in here so he can do a review and claim 20% performance increase \s
cowpig 2y ago
> Arctic seems surprisingly disinterested in advertising its new fan, even though it represents a step up in performance in its class. The company deletes or ignores Arctic subreddit posts, press releases are difficult to find, and very few outlets have reported on the fan's real-world performance. Those interested in using the extreme high-pressure fan in 3U+ servers or workstations can find it for $14.99 from Amazon. Am I just totally jaded or does whole article this feel a lot like shady native advertising?
- lolinder 2y ago
  It's not you, it definitely feels that way. It's five paragraphs about a fan that by all appearances the author has never seen in person, with a high density of fluffy positive language and ending with an Amazon affiliate link. At a minimum Tom's Hardware is just fishing for clicks on their affiliate link, but it also definitely smells of a paid ad.
iancmceachern 2y ago
You see this all the time in large AC motors, even ones that power large fans. They have a small fan built into the rotor to cool the motor itself.
moondev 2y ago
The SAN ACE 8080 takes this concept to a new level

46 points by LorenDB 2y ago

deleted 2y ago

[deleted]

ynniv 2y ago

That looks like an AI hallucination

JDEW 2y ago
Maybe that's how they came up with the idea.

layer8 2y ago

It’s fans all the way down.

ksec 2y ago

Is "Fan inside a Fan" a new design for DC? Or is it something available in hyper scale only to come out now with Arctic?

madihaa 2y ago

We found a way to make your nice large quiet fan have a squeel sound in 1 year so you have to replace it sooner.

jsheard 2y ago
This is designed for servers, noise is the least of its concerns. Everything in a datacenter has fans that sound like they're trying to launch the machine into orbit.
Vecr 2y ago
This is a server fan, it's already really loud.
edm0nd 2y ago
have you ever been in a DC? they loud af boiiiiiii

chrsw 2y ago

Yo dawg...

oez 2y ago

The title of this article really bugs me. It's only one fan, it's cooling itself!!

ipsum2 2y ago

Video: https://youtu.be/gfkeR9vfmNo?t=86 https://youtu.be/gfkeR9vfmNo?t=86

B1FF_PSUVM 2y ago
Thumb gets pixelated at 1:30 ...

eru 2y ago

> [...] 11.45 mmH₂O of static pressure [...] I don't think I've ever seen anyone use these units for pressure? What happened to Pascal?

buildbot 2y ago
Nearly all case fan brands use mmH₂O. No idea why, but that's what they do.
tmtvl 2y ago
He walked into a bar. ...I'll see myself out.
VenturingVole 2y ago
Someone said hectopascals and was, unfortunately, misunderstood. ... As per commenter below, will also see myself out.
earleybird 2y ago
Inches of water is sometimes seen for retail vacuums in shop & household use. I have no idea where it came from - perhaps marketing where it gives a buyer an easy to visualize physical model for comparative purposes.
wongarsu 2y ago
mmHg is reasonably common because that's how the first pressure gauges worked, and measuring how much a pressurized gas or liquid can move mercury against gravity is easy and reliable enough that this style stayed in use for 300 years [1]. But 0.8mmHg isn't a very impressive number, so at some point someone got the bright idea to use mmH₂O instead. [1] https://en.wikipedia.org/wiki/Mercury_pressure_gauge https://en.wikipedia.org/wiki/Mercury_pressure_gauge
GuB-42 2y ago
I have seen it a few times for vacuum cleaners. Anyways, the conversion is easy: 1 mmH₂O is g Pascals, g = 9.80665, the Earth gravity, often rounded to 10. It is actually easy to calculate: 1 Pa is 1 N/m² 1 N is the force needed to accelerate 1 kg at 1 m/s², the acceleration due to Earth gravity is "g", so, because F=ma, 1 kilogram-force under Earth gravity is g N. Density of water is 1 kg/L, a column of water 1mm high with a 1m² base has a volume of 1/1000 of a m³, or a liter, so that column weights 1 kg. Therefore that column exerts a force of g N on 1m², or g Pa. So 1 mmH₂O = g Pa =~ 10 Pa = 1daPa I have never seen the daPa used as a unit, but the daN is common, because 1 daN so close to 1 kgf (kilogram-force).

buildbot 2y ago

They have these in a smaller 80mm size, I have two - they are weirdly great? Relatively quiet at half speed and move crazy amounts of air, compared to other 80mm fans I have. The fan in the center cools the motor which I assume increases MTFB.

jsheard 2y ago
They're 38mm thick and adding extra thickness to fans improves performance by a lot, but for some reason consumer PC component brands have rarely ventured beyond 25mm until quite recently.

jeffybefffy519 2y ago

Quick someone tag linus in here so he can do a review and claim 20% performance increase \s

cowpig 2y ago

> Arctic seems surprisingly disinterested in advertising its new fan, even though it represents a step up in performance in its class. The company deletes or ignores Arctic subreddit posts, press releases are difficult to find, and very few outlets have reported on the fan's real-world performance. Those interested in using the extreme high-pressure fan in 3U+ servers or workstations can find it for $14.99 from Amazon. Am I just totally jaded or does whole article this feel a lot like shady native advertising?

lolinder 2y ago
It's not you, it definitely feels that way. It's five paragraphs about a fan that by all appearances the author has never seen in person, with a high density of fluffy positive language and ending with an Amazon affiliate link. At a minimum Tom's Hardware is just fishing for clicks on their affiliate link, but it also definitely smells of a paid ad.

iancmceachern 2y ago

You see this all the time in large AC motors, even ones that power large fans. They have a small fan built into the rotor to cool the motor itself.

moondev 2y ago

The SAN ACE 8080 takes this concept to a new level