• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

SilentiumPC Presents the Innovative Fluctus 120 PWM Fan with Psychoacoustic Optimization

btarunr

Editor & Senior Moderator
Staff member
Joined
Oct 9, 2007
Messages
46,891 (7.62/day)
Location
Hyderabad, India
System Name RBMK-1000
Processor AMD Ryzen 7 5700G
Motherboard ASUS ROG Strix B450-E Gaming
Cooling DeepCool Gammax L240 V2
Memory 2x 8GB G.Skill Sniper X
Video Card(s) Palit GeForce RTX 2080 SUPER GameRock
Storage Western Digital Black NVMe 512GB
Display(s) BenQ 1440p 60 Hz 27-inch
Case Corsair Carbide 100R
Audio Device(s) ASUS SupremeFX S1220A
Power Supply Cooler Master MWE Gold 650W
Mouse ASUS ROG Strix Impact
Keyboard Gamdias Hermes E2
Software Windows 11 Pro
SilentiumPC, the European manufacturer of CPU coolers, Power Supply Units and PC cases, introduces the new Fluctus 120 PWM axial fan as a stand-alone product for the DIY market. The Fluctus 120 PWM fan is co-developed with Synergy Cooling and features high static pressure, very good airflow and excellent acoustics. It provides outstanding performance on dense water cooling radiators and in cases that are equipped with dust filters. A revamped, durable fluid dynamic bearing (FDB) with 100.000-hour MTBF ensures high longevity, underlined by the 6-year manufacturer's warranty.

SilentiumPC Fluctus 120 PWM is equipped with a unique 9-bladed rotor with serrated leading edges. It provides high static pressure, which is required for creating good airflow through dense radiators of all-in-one water coolers. Users can expect a 1 to 3 °C reduction in temperatures compared to other fans commonly paired with AIO liquid coolers. In addition to that, the overall noise levels are decreased. Thanks to the wide speed regulation range from 300 (±100) to 1.800 (±10%) rpm makes Fluctus 120 PWM a perfect match for both bigger (360 mm) and smaller (240 mm, 120 mm) radiators, which usually requires higher fan speeds.



Thanks to all-round optimization, Fluctus 120 PWM can also create high airflow in less restricted applications, such as in cases with dense dust filters. Compared to other popular solutions, replacing intake fans with Fluctus 120 PWM can reduce video card and CPU temperatures by between 1 and 4 °C while reducing noise levels by up to half perceived loudness.

Psychoacoustic optimizations
Fluctus 120 PWM fans provide excellent acoustic performance thanks to technical improvements developed by Synergy Cooling. Serrated leading edges of the fan blades reduce prominent tonal noise, easily discernible over the acoustic background. It is the heart of Synergy Cooling's patent-pending psychoacoustic optimization and makes Fluctus 120 PWM even more pleasant to the human ear than it is apparent from standard noise level measurements. All-axis vibration dampeners built into the fan frame reduce the risk of vibrations in adjacent elements without breaking compatibility with standard 120 mm fan placements.

Versatile PWM control
The speed of Fluctus 120 PWM fans can be controlled by the PWM signal in a wide range from 300 (±100) to 1.800 (±10%) rpm, making them suitable for various usage scenarios. Case fans, water cooling radiators and air coolers all require different fan speeds to reach a balance between performance and noise levels. Fluctus 120 PWM is ready for all of them. Enthusiasts can even create custom semi-passive cooling systems thanks to a fan stop feature: Fluctus 120 PWM automatically stops when PWM signal falls below 5% duty cycle and automatically restarts when it rises above 10%. The fan is equipped with a 4-pin power cable with a built-in splitter, allowing users to connect another fan to the same power and speed control source. Included 40 cm cable extension provides installation flexibility even in voluminous cases.

MSRP: 10.90€ including VAT.

View at TechPowerUp Main Site
 

FreedomEclipse

~Technological Technocrat~
Joined
Apr 20, 2007
Messages
23,717 (3.75/day)
Location
London,UK
System Name Codename: Icarus Mk.VI
Processor Intel 8600k@Stock -- pending tuning
Motherboard Asus ROG Strixx Z370-F
Cooling CPU: BeQuiet! Dark Rock Pro 4 {1xCorsair ML120 Pro|5xML140 Pro}
Memory 32GB XPG Gammix D10 {2x16GB}
Video Card(s) ASUS Dual Radeon™ RX 6700 XT OC Edition
Storage Samsung 970 Evo 512GB SSD (Boot)|WD SN770 (Gaming)|2x 3TB Toshiba DT01ACA300|2x 2TB Crucial BX500
Display(s) LG GP850-B
Case Corsair 760T (White)
Audio Device(s) Yamaha RX-V573|Speakers: JBL Control One|Auna 300-CN|Wharfedale Diamond SW150
Power Supply Corsair AX760
Mouse Logitech G900
Keyboard Duckyshine Dead LED(s) III
Software Windows 10 Pro
Benchmark Scores (ノಠ益ಠ)ノ彡┻━┻
Akasa has been making similar fans since as far back as 2013 but nobody ever talks about them.

 

TheLostSwede

News Editor
Joined
Nov 11, 2004
Messages
16,885 (2.34/day)
Location
Sweden
System Name Overlord Mk MLI
Processor AMD Ryzen 7 7800X3D
Motherboard Gigabyte X670E Aorus Master
Cooling Noctua NH-D15 SE with offsets
Memory 32GB Team T-Create Expert DDR5 6000 MHz @ CL30-34-34-68
Video Card(s) Gainward GeForce RTX 4080 Phantom GS
Storage 1TB Solidigm P44 Pro, 2 TB Corsair MP600 Pro, 2TB Kingston KC3000
Display(s) Acer XV272K LVbmiipruzx 4K@160Hz
Case Fractal Design Torrent Compact
Audio Device(s) Corsair Virtuoso SE
Power Supply be quiet! Pure Power 12 M 850 W
Mouse Logitech G502 Lightspeed
Keyboard Corsair K70 Max
Software Windows 10 Pro
Benchmark Scores https://valid.x86.fr/yfsd9w
Akasa has been making similar fans since as far back as 2013 but nobody ever talks about them.

That might be akasa's fault, as they haven't done much marketing for their products for a very long time.
I used to review a lot of their products back in the day and had a really good relationship with them and still try to catch up with the one guy I still know there when we happen to be at the same trade shows.
They actually make some rather good products, but they're too low key.
I guess it doesn't help that the UK seems to be their main market. Can't even buy their stuff in Taiwan, despite it being a Taiwanese company...
 
Joined
May 28, 2020
Messages
752 (0.49/day)
System Name Main PC
Processor AMD Ryzen 9 5950X
Motherboard ASUS X570 Crosshair VIII Hero (Wi-Fi)
Cooling EKWB X570 VIII Hero Monoblock, 2x XD5, Heatkiller IV SB block for chipset,Alphacool 3090 Strix block
Memory 4x16GB 3200-14-14-14-34 G.Skill Trident RGB (OC: 3600-14-14-14-28)
Video Card(s) ASUS RTX 3090 Strix OC
Storage 500GB+500GB SSD RAID0, Fusion IoDrive2 1.2TB, Huawei HSSD 2TB, 11TB on server used for steam
Display(s) Dell LG CX48 (custom res: 3840x1620@120Hz) + Acer XB271HU 2560x1440@144Hz
Case Corsair 1000D
Audio Device(s) Sennheiser HD599, Blue Yeti
Power Supply Corsair RM1000i
Mouse Logitech G502 Lightspeed
Keyboard Corsair Strafe RGB MK2
Software Windows 10 Pro 20H2
"psychoacoustic optimization"
That's some grade A marketing wank
 
Joined
Oct 10, 2009
Messages
788 (0.15/day)
Location
Madrid, Spain
System Name Rectangulote
Processor Core I9-9900KF
Motherboard Asus TUF Z390M
Cooling Alphacool Eisbaer Aurora 280 + Eisblock RTX 3090 RE + 2 x 240 ST30
Memory 32 GB DDR4 3600mhz CL16 Crucial Ballistix
Video Card(s) KFA2 RTX 3090 SG
Storage WD Blue 3D 2TB + 2 x WD Black SN750 1TB
Display(s) 2 x Asus ROG Swift PG278QR / Samsung Q60R
Case Corsair 5000D Airflow
Audio Device(s) Evga Nu Audio + Sennheiser HD599SE + Trust GTX 258
Power Supply Corsair RMX850
Mouse Razer Naga Wireless Pro / Logitech MX Master
Keyboard Keychron K4 / Dierya DK61 Pro
Software Windows 11 Pro
Akasa has been making similar fans since as far back as 2013 but nobody ever talks about them.
I think most fans nowadays have that type of dents in the blades, yeah.
 

FreedomEclipse

~Technological Technocrat~
Joined
Apr 20, 2007
Messages
23,717 (3.75/day)
Location
London,UK
System Name Codename: Icarus Mk.VI
Processor Intel 8600k@Stock -- pending tuning
Motherboard Asus ROG Strixx Z370-F
Cooling CPU: BeQuiet! Dark Rock Pro 4 {1xCorsair ML120 Pro|5xML140 Pro}
Memory 32GB XPG Gammix D10 {2x16GB}
Video Card(s) ASUS Dual Radeon™ RX 6700 XT OC Edition
Storage Samsung 970 Evo 512GB SSD (Boot)|WD SN770 (Gaming)|2x 3TB Toshiba DT01ACA300|2x 2TB Crucial BX500
Display(s) LG GP850-B
Case Corsair 760T (White)
Audio Device(s) Yamaha RX-V573|Speakers: JBL Control One|Auna 300-CN|Wharfedale Diamond SW150
Power Supply Corsair AX760
Mouse Logitech G900
Keyboard Duckyshine Dead LED(s) III
Software Windows 10 Pro
Benchmark Scores (ノಠ益ಠ)ノ彡┻━┻
Joined
Jan 3, 2021
Messages
3,076 (2.33/day)
Location
Slovenia
Processor i5-6600K
Motherboard Asus Z170A
Cooling some cheap Cooler Master Hyper 103 or similar
Memory 16GB DDR4-2400
Video Card(s) IGP
Storage Samsung 850 EVO 250GB
Display(s) 2x Oldell 24" 1920x1200
Case Bitfenix Nova white windowless non-mesh
Audio Device(s) E-mu 1212m PCI
Power Supply Seasonic G-360
Mouse Logitech Marble trackball, never had a mouse
Keyboard Key Tronic KT2000, no Win key because 1994
Software Oldwin

FreedomEclipse

~Technological Technocrat~
Joined
Apr 20, 2007
Messages
23,717 (3.75/day)
Location
London,UK
System Name Codename: Icarus Mk.VI
Processor Intel 8600k@Stock -- pending tuning
Motherboard Asus ROG Strixx Z370-F
Cooling CPU: BeQuiet! Dark Rock Pro 4 {1xCorsair ML120 Pro|5xML140 Pro}
Memory 32GB XPG Gammix D10 {2x16GB}
Video Card(s) ASUS Dual Radeon™ RX 6700 XT OC Edition
Storage Samsung 970 Evo 512GB SSD (Boot)|WD SN770 (Gaming)|2x 3TB Toshiba DT01ACA300|2x 2TB Crucial BX500
Display(s) LG GP850-B
Case Corsair 760T (White)
Audio Device(s) Yamaha RX-V573|Speakers: JBL Control One|Auna 300-CN|Wharfedale Diamond SW150
Power Supply Corsair AX760
Mouse Logitech G900
Keyboard Duckyshine Dead LED(s) III
Software Windows 10 Pro
Benchmark Scores (ノಠ益ಠ)ノ彡┻━┻
Joined
Dec 18, 2019
Messages
204 (0.12/day)
And the only spec shown is the RPM range. I know paper specs don’t tell the whole story but, seriously? A whole essay and nothing about CFM or mmH2O.
 
Joined
Oct 22, 2014
Messages
13,721 (3.83/day)
Location
Sunshine Coast
System Name Lenovo ThinkCentre
Processor AMD 5650GE
Motherboard Lenovo
Memory 32 GB DDR4
Display(s) AOC 24" Freesync 1m.s. 75Hz
Mouse Lenovo
Keyboard Lenovo
Software W11 Pro 64 bit
Psycho-acoustic = crazy sounds.
 
Joined
Feb 15, 2019
Messages
1,624 (0.81/day)
System Name Personal Gaming Rig
Processor Ryzen 7800X3D
Motherboard MSI X670E Carbon
Cooling MO-RA 3 420
Memory 32GB 6000MHz
Video Card(s) RTX 4090 ICHILL FROSTBITE ULTRA
Storage 4x 2TB Nvme
Display(s) Samsung G8 OLED
Case Silverstone FT04
"psychoacoustic optimization"
That's some grade A marketing wank

So the acoustic improvements are just in their minds not actually applied to the product.
 
Joined
Aug 14, 2013
Messages
2,373 (0.59/day)
System Name boomer--->zoomer not your typical millenial build
Processor i5-760 @ 3.8ghz + turbo ~goes wayyyyyyyyy fast cuz turboooooz~
Motherboard P55-GD80 ~best motherboard ever designed~
Cooling NH-D15 ~double stack thot twerk all day~
Memory 16GB Crucial Ballistix LP ~memory gone AWOL~
Video Card(s) MSI GTX 970 ~*~GOLDEN EDITION~*~ RAWRRRRRR
Storage 500GB Samsung 850 Evo (OS X, *nix), 128GB Samsung 840 Pro (W10 Pro), 1TB SpinPoint F3 ~best in class
Display(s) ASUS VW246H ~best 24" you've seen *FULL HD* *1O80PP* *SLAPS*~
Case FT02-W ~the W stands for white but it's brushed aluminum except for the disgusting ODD bays; *cries*
Audio Device(s) A LOT
Power Supply 850W EVGA SuperNova G2 ~hot fire like champagne~
Mouse CM Spawn ~cmcz R c00l seth mcfarlane darawss~
Keyboard CM QF Rapid - Browns ~fastrrr kees for fstr teens~
Software integrated into the chassis
Benchmark Scores 9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
Joined
Jul 18, 2016
Messages
353 (0.12/day)
Location
Indonesia
System Name Nero Mini
Processor AMD Ryzen 7 5800X 4.7GHz-4.9GHz
Motherboard Gigabyte X570i Aorus Pro Wifi
Cooling Noctua NH-D15S+3x Noctua IPPC 3K
Memory Team Dark 3800MHz CL16 2x16GB 55ns
Video Card(s) Palit RTX 2060 Super JS Shunt Mod 2130MHz/1925MHz + 2x Noctua 120mm IPPC 3K
Storage Adata XPG Gammix S50 1TB
Display(s) LG 27UD68W
Case Lian-Li TU-150
Power Supply Corsair SF750 Platinum
Software Windows 10 Pro
Users can expect a 1 to 3 °C reduction in temperatures compared to other fans commonly paired with AIO liquid coolers.
Uh what are those fans exactly? As far as I know every brand AIOs usually use their own very different fans lol
 
Joined
Mar 21, 2021
Messages
4,800 (3.86/day)
Location
Colorado, U.S.A.
System Name CyberPowerPC ET8070
Processor Intel Core i5-10400F
Motherboard Gigabyte B460M DS3H AC-Y1
Memory 2 x Crucial Ballistix 8GB DDR4-3000
Video Card(s) MSI Nvidia GeForce GTX 1660 Super
Storage Boot: Intel OPTANE SSD P1600X Series 118GB M.2 PCIE
Display(s) Dell P2416D (2560 x 1440)
Power Supply EVGA 500W1
Software Windows 11 Home
Strange, normally the number of blades is a prime (to generate less harmonics).
 
Joined
Jun 22, 2014
Messages
439 (0.12/day)
System Name Desktop / "Console"
Processor Ryzen 5950X / Ryzen 5800X
Motherboard Asus X570 Hero / Asus X570-i
Cooling EK AIO Elite 280 / Cryorig C1
Memory 32GB Gskill Trident DDR4-3600 CL16 / 16GB Crucial Ballistix DDR4-3600 CL16
Video Card(s) RTX 4090 FE / RTX 2080ti FE
Storage 1TB Samsung 980 Pro, 1TB Sabrent Rocket 4 Plus NVME / 1TB Sabrent Rocket 4 NVME, 1TB Intel 660P
Display(s) Alienware AW3423DW / LG 65CX Oled
Case Lian Li O11 Mini / Sliger CL530 Conswole
Audio Device(s) Sony AVR, SVS speakers & subs / Marantz AVR, SVS speakers & subs
Power Supply ROG Loki 1000 / Silverstone SX800
VR HMD Quest 3
Genuinely curious to see a comparison done between these and the Arctic P12.

I used to review a lot of their products back in the day and had a really good relationship with them and still try to catch up with the one guy I still know there when we happen to be at the same trade shows.
They actually make some rather good products, but they're too low key.
On the Akasa fan, do you think the serrated leading edge created a different sound profile as claimed? For a company like Noctua that focuses on obsessive levels of silence/performance R&D (not saying that in a bad way at all) it makes me wonder why they only choose the trailing edge. Or perhaps it makes no difference which side they are on, as along as the are present on one or the other (......or perhaps it is only to try and separate themselves from the vast sea of same old, same old, fans).
 
Joined
Jun 3, 2010
Messages
2,540 (0.49/day)
Do I want my case fan to be my shrink in his free time? Sure I do!
We used to heal the insane with ornamental fountains in history. Now did that actually work, I haven't seen the evidence.

Genuinely curious to see a comparison done between these and the Arctic P12.


On the Akasa fan, do you think the serrated leading edge created a different sound profile as claimed? For a company like Noctua that focuses on obsessive levels of silence/performance R&D (not saying that in a bad way at all) it makes me wonder why they only choose the trailing edge. Or perhaps it makes no difference which side they are on, as along as the are present on one or the other (......or perhaps it is only to try and separate themselves from the vast sea of same old, same old, fans).
The leading edge serrations are done to decrease air flow, the trailing edge to increase it, imo.

Too much propeller speed creates shearing and noise in the trailing edge. If laminar flow is disrupted at the leading edge, the performance compromise can lower the sound volume at the trailing edge. Trailing edge serrations might be increasing the boundary layer to decrease flow separation.
 
Last edited:
Top