Wednesday, May 7th 2025

Seasonic Intros 30 mm Thick MAXFlow 120 mm Fan Series

Seasonic has introduced its new MAXFlow 120 mm cooling fan series with a thickness of 30 mm. It features a reinforced frame with noise-dampening corner pads while the reverse fan design with arc-shaped blades improves the airflow. Seasonic newest MAXFlow fan measures 120 mm x 120 mm x 30 mm and runs on DC power between 9.5 V and 13.8 V with a maximum speed of 3300 RPM. The fan use high-quality Japanese NMB ball bearings with a lifespan of up to 70,000 hours.

Performance specifications include impressive airflow of 154.85 CFM and static pressure of 8.5 mm-H₂O, though noise levels reach 46.60 dB(A) at maximum speed. For convenience, a three-speed selector switch allows users to choose between quiet operation (up to 1000 RPM), balanced performance (up to 2000 RPM), or maximum cooling capacity (up to 3300 RPM). Seasonic MAXFlow 120 mm is available in white and black versions, as a single pack or triple set (this kit includes an additional 3-to-1 PWM extension cable for motherboard connection) and is backed by a 5-year warranty. Exact pricing and availability are not known at this moment, however, Seasonic is mentioning "affordable price" on product presentation pages.
Sources: ITHome, Seasonic MAXFlow 120
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15 Comments on Seasonic Intros 30 mm Thick MAXFlow 120 mm Fan Series

#1
Chrispy_
Cool. More thick fans on the market is a good thing. There's almost no reason for the industry to have stayed at 25mm for so long, that was a standard thickness from when the default fan sizes in PCs were 60mm and 80mm. Failing to scale thickness as the industry has adopted larger diameters was bad for performance but necessary for compatibility. These days, the compatibility requirements for 25mm thickness have all but vanished.
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#2
zenlessyank
Does this mean Noctua are going to start making power supplies?
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#3
Chaitanya
zenlessyankDoes this mean Noctua are going to start making power supplies?
Seasonic also makes cases.
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#4
forman313
zenlessyankDoes this mean Noctua are going to start making power supplies?
Start? Seasonic won a reddot award for one of their 120mm fans back in 2022, so it´s not like this is their first one.

OT: 30mm is a great idea. Now we need radiators and heatsinks with 15-20% denser fin stack.

EDIT: I see Phantek made a 30x120mm back in 2021 and the performance is excellent. In some configurations its actually the best performing fan when it comes to noise vs perf. to this day.
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#5
bonehead123
Looks nice & all, but "affordable price".....I will believe that when I see it..

I'm pretty sure if they launch at more than $100 for a 3 pack, consumers will very quickly make them a big, fat, resounding D..O..frigg..A.. hahahaha :)
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#6
veleciraptor
Good to see more 30mm fans. I think we reach the limits of 25mm fans for cooling. According to Corsair, 30 mm fans improve air capacity 17% compared to 25mm fans. I wish other companys like Noctua and BeQuiet will release 30mm fans or cases with 30mm fans. Phantenks T30 now have new competitor.


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#7
TechLurker
As far as fan thicknesses go, they should go all the way to 38mm; the same standard as the commercial/enterprise sector and port over some of those to the high-end consumer sector. Those fans can last a long time, and even on lower speeds, put out a fair bit more air and pressure than 25mm thick fans of similar blade design and width (120mm or 140mm) do at higher speeds, barring specialized 25mm fans of old like the old Nidec Scythes with 5000-8000 rpm or the old Deltas (the classic screamers).
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#8
_roman_
Many hours before i checked on my laptops the specs. There are barely any specifications. The loudness is insane. these fans may be useful for a machine in a loud workshop with 24/7 ear protection on the workers.

--

No - Fans have certain performance parameters. 30mm may be better. But - only the performance specs matters. I think i saw 45 or 50 DBA hours ago on both documents with barely any specs today.
noise levels reach 46.60 dB(A) at maximum speed
no data, no curves for anything else.

i also disliked, what i remember. 3000 rpm + 10% and - 10%. that is junk specs. That should be max rpm from 2700 to 3300 rpm. Serious?
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#9
Dirt Chip
Nice. Would like to see it in 140mm variant
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#10
TPUnique
_roman_Many hours before i checked on my laptops the specs. There are barely any specifications. The loudness is insane. these fans may be useful for a machine in a loud workshop with 24/7 ear protection on the workers.

--

No - Fans have certain performance parameters. 30mm may be better. But - only the performance specs matters. I think i saw 45 or 50 DBA hours ago on both documents with barely any specs today.



no data, no curves for anything else.

i also disliked, what i remember. 3000 rpm + 10% and - 10%. that is junk specs. That should be max rpm from 2700 to 3300 rpm. Serious?
3300 RPM is the maximum speed. Given these are PWM fans, it's quite obvious that they're capable of running to lower speeds. The question is, what's the lowest speed it can achieve.

Anyway, loudness shouldn't be a problem.
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#11
trsttte
forman313Seasonic **bought** a reddot award for one of their 120mm fans back in 2022
Fixed it for you ;)
forman313OT: 30mm is a great idea. Now we need radiators and heatsinks with 15-20% denser fin stack.
Not exactly the same, thicker/denser radiator/heatsink also increases air resistance. It can be usefull to make use of the increased airflow of thicker fans, but we already double wide radiators anyway and you can also stack them.
TPUniqueThe question is, what's the lowest speed it can achieve.
They say the fans have a switch to scale from max 3000rpm to 2000 and 1000. Even if they can only respond from 25% pwm up, 250rpm should be completely silent unless they used complete garbage for bearings.
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#12
TPUnique
trsttteThey say the fans have a switch to scale from max 3000rpm to 2000 and 1000. Even if they can only respond from 25% pwm up, 250rpm should be completely silent unless they used complete garbage for bearings.
That'd be very fine by me. In my experience, even 1000 RPM is very tolerable, providing the computer is 50 cm+ away from the ears.
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#13
Chrispy_
trsttteSeasonic **bought** a reddot award for one of their 120mm fans back in 2022
So true. To "win" a red dot award:

A product must have a recognizable purpose and be easy and self-explanatory to use, while the product must be aesthetic and sustainable or long-lasting. Although the individual qualities may vary in strength, none of them should be entirely absent.

So, in the case of a fan, it must be:
  1. recognizable as a fan? I think a fan qualifies for that one.
  2. be easy to use? I'm sure that single, keyed connector that only fits one way will get them a pass here too.
  3. aesthetic? they put some minimal, purely-cosmetic ridged texture on the edge which must count as "aesthetics", right?
  4. sustainable or long-lasting? Well, a 3-year warranty is one whole year more than the legal minimum, so yes! pass with flying colours....
  5. entered into the red dot design 'competition' for a €7500 bribe registration fee.
Such a gruelling set of criteria! It's a wonder anyone wins the prestigious red dot award when it's asking for the impossible ;)
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#14
AsRock
TPU addict
Thick HAHAHA, if they were thick they would be 38mm or even higher.
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#15
Caring1
If you want real improvements in airflow, slap an E-turbo on the outside of your case and crank it up to 20PSi boost.
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