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

What are your opinions on PSUs with zero-rpm fan features?

stromtroeper

New Member
Joined
Oct 4, 2022
Messages
1 (0.02/day)
I remember reading a Techpowerup review where the reviewer said he did not like those types of PSUs at all, I don't quite remember why...

My reason for the question is:
I have a low power GT1030 with a passive heatsink (I despise any type of fan noise). I bought a high end Corsair platinum PSU 750W that I know from reviews has zero-rpm fan below 400W power draw. So my system was operating noise free for 5 years until the PSU suddenly died.

I am wondering if it died because it operated without the aid of the cooling fan...(I checked and found not a spec of dust inside PSU)
However I sent it to Corsair for RMA and they sent me a new one within days (10 year warranty)

Thoughts?
 
Joined
Feb 22, 2022
Messages
155 (0.55/day)
Processor AMD Ryzen 9 5950X
Motherboard Asus Crosshair VIII Dark Hero
Cooling Custom Watercooling
Memory G.Skill Trident Z Royal 2x16GB
Video Card(s) MSi RTX 3080ti Suprim X
Storage 2TB Corsair MP600 PRO Hydro X
Display(s) Samsung G7 27" x2
Audio Device(s) Sound Blaster ZxR
Power Supply Be Quiet! Dark Power Pro 12 1500W
Mouse Logitech G903
Keyboard Steelseries Apex Pro
The fan is not only activated by power draw, but also temperature. I like zero rpm fan modes. And have not seen any failures I would attribute to this feature.

The previous faulty PSU I had was a DOA Corsair HX1000 where the fan had a clicking noise. So the zero rpm feature hid the problem for a couple weeks :banghead:
 
Joined
Jul 2, 2008
Messages
7,978 (1.52/day)
Location
Hillsboro, OR
System Name Main/DC
Processor i7-3770K/i7-2600K
Motherboard MSI Z77A-GD55/GA-P67A-UD4-B3
Cooling Phanteks PH-TC14CS/H80
Memory Crucial Ballistix Sport 16GB (2 x 8GB) LP /4GB Kingston DDR3 1600
Video Card(s) Asus GTX 660 Ti/MSI HD7770
Storage Crucial MX100 256GB/120GB Samsung 830 & Seagate 2TB(died)
Display(s) Asus 24' LED/Samsung SyncMaster B1940
Case P100/Antec P280 It's huge!
Audio Device(s) on board
Power Supply SeaSonic SS-660XP2/Seasonic SS-760XP2
Software Win 7 Home Premiun 64 Bit
Joined
Aug 12, 2020
Messages
709 (0.84/day)
You cannot conclusively prove your PSU failure was due to it being fanless. Even if you do proper PSU breakdown and find dead component(s), you can only suppose higher operating temperatures accelerated their demise, but again, this is unprovable (and personally I find it doubtful, especially if failure happened within warranty period, as I would expect engineers designing the PSU to spec for such period)

It's usually turned on by internal temperature. Typically, there is an NTC thermistor inside, which, when heated high enough, drops resistance low enough, so current passing allows the fan to start.

There is also some sort of thresholding for that typically, because at voltages close to startup fan might attempt but struggle to run, generating buzzing noise. I actually fanswapped my old LEPA G650-MAS due to this exact issue, and early fanless Corsairs suffered from this as well.

Now I use 2 such PSUs in my rigs: New Cooler Master V550 Gold V2 and old Tacens Valeo III 500 W, and haven't had issues since. Funny how this Tacens got fanless mode right in 2007-2008 before first fanless Corsairs lol.
 
Joined
Jun 2, 2017
Messages
4,861 (2.42/day)
System Name Best AMD Computer
Processor AMD 5950X
Motherboard MSI X570S ACE Max
Cooling In Win SR36
Memory ADATA D60 3600MHZ 32 GB
Video Card(s) MSI 6800XT Gaming Trio X
Storage Seagate 530 2Tb, Adata SX8200 2TBx2, Kingston 2 TBx2, Micron 8 TB
Display(s) GIGABYTE 32QC
Case PHANTEKS ENTHOO PRO 2
Audio Device(s) Corsair Void Pro, Logitch Z523 5.1
Power Supply Corsair HX1200!
Mouse Logitech g7 gaming mouse
Keyboard Logitech G510
Software Windows 10 Pro 64 Steam. GOG, Uplay, Origin
Benchmark Scores Firestrike: 24955 Time Spy: 13500
Years ago I bought a HX1200I. Corsair has aggressively been pulling their products into their software. I cannot run the fan on my PSU without using ICUE software. Without the software and fan control the PSU will go as high as 60 C. I am not a fan of zero RPM PSUs.
 
Joined
Nov 18, 2010
Messages
6,182 (1.41/day)
Location
Rīga, Latvia
System Name HELLSTAR
Processor AMD RYZEN 9 5950X
Motherboard ASUS Strix X570-E
Cooling Custom Loop. Two 360ies + 280 rad. 8x Nidec Servo Gentle Typhoons. EK-Quantum Momentum monoblock.
Memory 4x8GB G.SKILL Trident Z RGB F4-4133C19D-16GTZR 14-16-12-30-44
Video Card(s) ASUS 1080 Ti SLI + water blocks
Storage Optane 900P + Samsung PM981 NVMe 1TB + 750 EVO 500GB+ 1TB 980PRO
Display(s) Philips PHL BDM3270 + Acer XV242Y
Case Lian Li O11 Dynamic EVO
Audio Device(s) Sound Blaster ZxR
Power Supply Fractal Design Newton R3 1000W
Mouse Razer Basilisk
Keyboard Razer BlackWidow V3 - Yellow Switch
Software Windows 11 insider
Heat always builds up. It is not spread evenly.

Best of both worlds are hybrid fanless. My old fractal does it. It spins up like once an hour and then stops. PSU's usually doesn't have more than two temp probes, you cannot put them everywhere on each component.

The obvious problem is capacitor lifespan as their aging is also ambient temperature dependent(besides ripple). It takes only one cap near some hot element to make problems, like some additional voltages for logic, then a domino effect can occur due to instability taking out semiconductors.

So at the end of day it all depends. There are no problems with loads under ~150W. Laptop chargers do work fine, ain't it? Now with GaN the bar is higher. Doing more 200W passive is another topic. It is hard, I would not do it, especially not 400W. I have a feeling those designs still rely on some sort of case airflow. Maybe some super duper efficient designs past 95% efficiency but... 5% from 400W is still 20W, that's nothing to sneeze at.

It is all good when the load is high and dynamic, the PC triggers high loads and the fan spins up. The problem is with those PC's not hitting the ceiling and the heat always builds up, so it is debatable and depends on ambient temps, case airflow etc.
 
Joined
Dec 31, 2020
Messages
111 (0.16/day)
Processor E5-4627 v4 3.20 GHz
Motherboard VEINEDA X99
Video Card(s) WINDFORCE 980Ti
Storage NE-512 KingSpec
Case DAOTECH X9
Power Supply SF450
I haven't noticed any problems, but over time the fan-less function turned off sooner even at very low loads like browsing and became very noisy at that on my gold 450 220v, although being more efficient. This is useful for prolonging the fan life as well as comfort so i see no reason to avoid it. Note that never happened to replicate the exact activation point, it was much lower than review data taken at 110v to begin with. So it must be temperature sensing all the time. Especially with the 1030 in no way could it overheat unless you live on the equator or on the beach in bad humidity levels.
 

dgianstefani

TPU Proofreader
Staff member
Joined
Dec 29, 2017
Messages
1,783 (0.99/day)
Location
Swansea, Wales
System Name Silent
Processor Ryzen 5800X3D @ 4.55ghz
Motherboard Asus Strix X570I
Cooling Optimus AMD Raw Copper/Plexi, EK Copper 240/40mm, Utilitube D5, 4x NF-A12x25, Mayhems XTR Nano White
Memory 32gb Dominator Platinum RGB 3933mhz 14-16-16-30 w/2x NF-A4x10 fan
Video Card(s) Rtx 3080ti Founders (Kryonaut Extreme, 15W/mK pads, Corsair XG7 Waterblock)
Storage Optane 800p 118gb, Samsung 980 Pro 1tb
Display(s) 32" 240hz 1440p Samsung G7 , 32" 1440p 60hz
Case Sliger SM570 Custom 13-Litre
Audio Device(s) Schiit Hel, Vmoda Crossfade M100 Master, Razer Nommo Pro
Power Supply Corsair SF750 Platinum
Mouse Razer Viper Pro V2 Mercury White
Keyboard Razer Huntsman Elite w/Mercury PBT keycaps
Heat always builds up. It is not spread evenly.

Best of both worlds are hybrid fanless. My old fractal does it. It spins up like once an hour and then stops. PSU's usually doesn't have more than two temp probes, you cannot put them everywhere on each component.

The obvious problem is capacitor lifespan as their aging is also ambient temperature dependent(besides ripple). It takes only one cap near some hot element to make problems, like some additional voltages for logic, then a domino effect can occur due to instability taking out semiconductors.

So at the end of day it all depends. There are no problems with loads under ~150W. Laptop chargers do work fine, ain't it? Now with GaN the bar is higher. Doing more 200W passive is another topic. It is hard, I would not do it, especially not 400W. I have a feeling those designs still rely on some sort of case airflow. Maybe some super duper efficient designs past 95% efficiency but... 5% from 400W is still 20W, that's nothing to sneeze at.

It is all good when the load is high and dynamic, the PC triggers high loads and the fan spins up. The problem is with those PC's not hitting the ceiling and the heat always builds up, so it is debatable and depends on ambient temps, case airflow etc.
Remember that laptop PSUs are enclosed, whereas desktop PSUs are much, much larger, and have venting, allowing for natural convection cooling, as heat rises.

Seasonic has a 700W fanless unit, that performs amongst the best ever tested in review, and temperatures aren't an issue.
 
Joined
Apr 12, 2013
Messages
5,428 (1.54/day)
I like those Hydro series with immersion "liquid" cooling :laugh:
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,609 (3.22/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
I love zero RPM, nice and quiet. I like a quiet PC like you do.

I recently went all-out and bought the Corsair AX1600i, because it's such a fabulous PSU and has a zero RPM fan. And yes, that power output is complete overkill...
 
Joined
Dec 25, 2020
Messages
1,060 (1.50/day)
Location
São Paulo, Brazil
System Name Project Kairi
Processor AMD Ryzen 9 5950X 16-Core Processor (B0)
Motherboard ASUS ROG STRIX B550-E (AGESA 1.2.0.3 C)
Cooling id-Cooling Frostflow X 360 + Gelid GC-Extreme
Memory 64 GB (4x 16) Corsair Dominator Platinum ROG DDR4-3600 @ 16-17-16-34-1 1.375V
Video Card(s) ASUS TUF Gaming OC GeForce RTX 3090 24 GB GDDR6X
Storage WD Green SN350 480 GB (x 2)
Display(s) Samsung The Frame 2022 32-inch (1080p60)
Case Cooler Master MasterFrame 700
Audio Device(s) EVGA Nu Audio (classic) + KZ ZSN Pro IEMs
Power Supply EVGA 1300 G2 1.3kW 80+ Gold
Mouse Logitech G305 Lightspeed K/DA + Logitech G840 XL K/DA
Keyboard Logitech G Pro K/DA with GX Brown switches
Software Windows 11 Pro for Workstations 22H2 / Nobara 36
Benchmark Scores Build pic: https://i.imgur.com/yxc0HrZ.jpg
I live in a hot climate area, so I generally disable zero RPM modes. Silent and powerful is great, but you need to balance noise output, performance and reliability. Having the latter two without noise is possible, but cost and complexity tends to increase exponentially depending on where you operate the system.

Years ago I bought a HX1200I. Corsair has aggressively been pulling their products into their software. I cannot run the fan on my PSU without using ICUE software. Without the software and fan control the PSU will go as high as 60 C. I am not a fan of zero RPM PSUs.

I owned an HX1200i, sold it a while ago. I dislike iCUE too, but with this model you should still be able to download and use Corsair Link 4. TechSpot still has it mirrored in their download section:

 

AsRock

TPU addict
Joined
Jun 23, 2007
Messages
17,972 (3.19/day)
Location
UK\USA
Processor AMD 3900X \ AMD 7700X
Motherboard ASRock AM4 X570 Pro 4 \ ASUS X670Xe TUF
Memory Patriot 2x16GB PVS432G320C6K \ G.Skill Flare X5 F5-6000J3238F 2x16GB
Video Card(s) eVga GTX1060 SSC \ XFX R9 390X +Antec P12 fans
Storage 2xIntel 80Gb (SATA2) Crucial MX500 \ Samsung 860 1TB +Samsung Evo 250GB+500GB Sabrent 1TB Rocket
Display(s) Samsung 1080P \ LG 43UN700
Case HTPC400 \ Fractal Design Torrent.
Audio Device(s) Yamaha RX-V677 \ Yamaha CX-830+Yamaha MX-630 Infinity RS4000\Paradigm P Studio 20, Blue Yeti
Power Supply Seasonic Focus 650w \ Seasonic Prime TX-750
Mouse Steelseries Sensei wireless \ Steelseries Sensei wireless
Keyboard Logitech K120 \ ROCCAT MK Pro ( modded amber leds )
Benchmark Scores Meh benchmarks.
I think it's better to have a very slow fan at the very least so there is some air movement.

EDIT: This is to protect things like capacitors, for example a video card were you could have a bunch of caps near a VRM or other close to it running temps 35-50c and not considered hot but the hotter they are the less life span they have.
 

qubit

Overclocked quantum bit
Joined
Dec 6, 2007
Messages
17,609 (3.22/day)
Location
Quantum Well UK
System Name Quantumville™
Processor Intel Core i7-2700K @ 4GHz
Motherboard Asus P8Z68-V PRO/GEN3
Cooling Noctua NH-D14
Memory 16GB (2 x 8GB Corsair Vengeance Black DDR3 PC3-12800 C9 1600MHz)
Video Card(s) MSI RTX 2080 SUPER Gaming X Trio
Storage Samsung 850 Pro 256GB | WD Black 4TB | WD Blue 6TB
Display(s) ASUS ROG Strix XG27UQR (4K, 144Hz, G-SYNC compatible) | Asus MG28UQ (4K, 60Hz, FreeSync compatible)
Case Cooler Master HAF 922
Audio Device(s) Creative Sound Blaster X-Fi Fatal1ty PCIe
Power Supply Corsair AX1600i
Mouse Microsoft Intellimouse Pro - Black Shadow
Keyboard Yes
Software Windows 10 Pro 64-bit
I live in a hot climate area, so I generally disable zero RPM modes. Silent and powerful is great, but you need to balance noise output, performance and reliability. Having the latter two without noise is possible, but cost and complexity tends to increase exponentially depending on where you operate the system.
I'll second this.

My new AX1600i that isn't being stressed at all with the PC sitting on the desktop and the fan off, nevertheless still feels quite warm to the touch, despite its super high efficiency.

If I was in warm climate like yours, I'd probably want the fan running all the time too.
 

dgianstefani

TPU Proofreader
Staff member
Joined
Dec 29, 2017
Messages
1,783 (0.99/day)
Location
Swansea, Wales
System Name Silent
Processor Ryzen 5800X3D @ 4.55ghz
Motherboard Asus Strix X570I
Cooling Optimus AMD Raw Copper/Plexi, EK Copper 240/40mm, Utilitube D5, 4x NF-A12x25, Mayhems XTR Nano White
Memory 32gb Dominator Platinum RGB 3933mhz 14-16-16-30 w/2x NF-A4x10 fan
Video Card(s) Rtx 3080ti Founders (Kryonaut Extreme, 15W/mK pads, Corsair XG7 Waterblock)
Storage Optane 800p 118gb, Samsung 980 Pro 1tb
Display(s) 32" 240hz 1440p Samsung G7 , 32" 1440p 60hz
Case Sliger SM570 Custom 13-Litre
Audio Device(s) Schiit Hel, Vmoda Crossfade M100 Master, Razer Nommo Pro
Power Supply Corsair SF750 Platinum
Mouse Razer Viper Pro V2 Mercury White
Keyboard Razer Huntsman Elite w/Mercury PBT keycaps
Warm to the touch means the PSU is doing it's job of radiating heat away from the components.

Same issue people have with the PS5 exhaust, AM5 CPUs and 5800X3D - they all report high exhaust temps, but this is good, as it means the heat is being efficiently removed. The issue is how much power draw those CPUs use, not the heat of the exhaust. With PSU's it's efficiency - you can easily determine how much electricity is being converted to heat, and then work out if that's reasonable to dissipate without active airflow.

Remember the PSU will shut itself down in OTP, and i know there's only a couple of temperature sensors, but I strongly doubt that the majority of high quality PSUs that have zero fan modes are suffering much product life degradation as a result of no active airflow. Either the fan kicks in at a wattage level, or the PSU heats up past it's ability to ambiently radiate heat, and the fan kicks in.
 
Joined
Nov 18, 2010
Messages
6,182 (1.41/day)
Location
Rīga, Latvia
System Name HELLSTAR
Processor AMD RYZEN 9 5950X
Motherboard ASUS Strix X570-E
Cooling Custom Loop. Two 360ies + 280 rad. 8x Nidec Servo Gentle Typhoons. EK-Quantum Momentum monoblock.
Memory 4x8GB G.SKILL Trident Z RGB F4-4133C19D-16GTZR 14-16-12-30-44
Video Card(s) ASUS 1080 Ti SLI + water blocks
Storage Optane 900P + Samsung PM981 NVMe 1TB + 750 EVO 500GB+ 1TB 980PRO
Display(s) Philips PHL BDM3270 + Acer XV242Y
Case Lian Li O11 Dynamic EVO
Audio Device(s) Sound Blaster ZxR
Power Supply Fractal Design Newton R3 1000W
Mouse Razer Basilisk
Keyboard Razer BlackWidow V3 - Yellow Switch
Software Windows 11 insider
as heat rises.

From where and how, you can put in many ways... also you can stuck it in a small SFF case with almost no ventilation and ambient inside over 60C and GPU always spits heat on the PSU, if we put all this case in some southern hot area the completely passive mode may not be the best scenario, the hotspot temperature deviation is in double digits inside the PSU, so the real result varies a lot. It would not matter in short term, but after 5-10 years some signs should show. Completely passive designs are rare for a reason. Even if some people abuse the design, then warranty comes in place, for most it should work. If you think for long term hassle free investment - simply don't do passive, if you plan to replace/sell it after 4-6 years - don't care.

As usual... there is no Wattage... it is power level measured in Watts, don't be like them.
 
Last edited:
Joined
Dec 5, 2013
Messages
490 (0.15/day)
Location
UK
Thoughts?
I prefer the fan on with semi-fanless models as running cooler with less high-low thermal cycling variation is better for the capacitors longer term, plus the fan speeds are much lower / quieter than they used to be (and I was a regular on SilentPCReview for years, so I'm picky about fan noise too). I doubt that a 30w GT1030 would have done anything though. Your PSU death could just be one of those things. Having said that, fanless / semi-fanless PSU's are why I hate stupid PSU shrouds. Many such PSU's state 'face them upward' if you're running without a fan (heat vented back into case is pretty negligible but at least it will vent out of the PSU instead of being trapped at the upside-down "bottom" of a downward-facing PSU), yet the PSU shroud in modern pretentious art pieces 'cases' then acts like the world's dumbest insulation...
 
Joined
Oct 18, 2013
Messages
3,924 (1.18/day)
Location
Next to the huge 155mm Howitzer that's in ur face
System Name The Little One
Processor i5-8279u
Motherboard AZW Speed S
Cooling Fan w/heat pipes + side & rear vents
Memory 32GB Crucial DDR4-3200 (2x 16GB)
Video Card(s) Iris Plus 655
Storage WD Black SN750 2TB m.2 + WD 2TB external nvme
Display(s) 2x Samsung 43" LCD's @1440p
Case Practically identical to a mac mini, just purrtier in slate blue, & with 3x usb ports on the front !
Audio Device(s) Yamaha ATS-1060 Bluetooth Soundbar & Subwoofer
Power Supply 65w brick
Mouse Logitech MX Master 2
Keyboard Logitech G613 mechanical wireless
Software Windows 10 pro 64 bit, with all the unnecessary background shitzu turned OFF !
Benchmark Scores PDQ - all things considered !
Bottom line is that heat & computer parts are sworn enemies, and have been since the dawn of the electronic age in the 30's....so either chill it or kill it !

"warm to the touch" is way too hot IMHO, so I will gladly tolerate a little touch of fan noise in favor of my 'puters dying an early death & having to be replaced prematurely...
 

Kissamies

S.T.A.R.S.
Joined
Dec 16, 2012
Messages
9,075 (2.49/day)
Location
Jyväskylä, Finland
Processor AMD Ryzen 5 3600
Motherboard Asus ROG Crosshair VII Hero
Cooling Arctic Freezer 50 + 6 case fans
Memory 32GB HyperX Fury DDR4-3200
Video Card(s) Powercolor Radeon RX 6700 XT Fighter
Storage ~2TB of SSDs + 3TB HDDs
Display(s) Lenovo 32" 4K IPS & Dell 24" 1080p TN + Arctic Z2 gen3
Case Corsair 4000D Airflow White
Audio Device(s) Corsair HS35
Power Supply Seasonic FX-750 750W
Mouse Logitech MX518 Legendary
Keyboard NOS C450 Mini Pro RGB
VR HMD Oculus Rift CV1
Software Win 11 Pro ENG
My old Seasonic FX750 is semi-passive and I had nothing to complain. Still a working unit, I just moved it to my 2nd rig though and to be honest, the system is loud enough so I can't hear any difference anymore that is the fan on or off.
 
Joined
Nov 24, 2018
Messages
1,903 (1.30/day)
Location
south wales uk
System Name 1. The Devils Dialysis VR rig 2. intel teliscope rig 3.MSI GP72MVR Leopard Pro .
Processor 1.3900x @stock 2. i7 7700k @5. 3. i7 7700hq
Motherboard 1.aorus x570 ultra 2. z270 Maximus IX Hero
Cooling 1.Hard tube loop, cpu and gpu 2. Hard loop cpu and gpu
Memory 1.hyperx preditor @3600 16gb 2.vengence 32gb @3000 3. 16gb hyperx @2400
Video Card(s) 1.Aorus Xtreme RTX2080 Waterforce 2. MSI 1080 8gb with EKWB 3. 1060 3gb.
Storage 1 M.2 500gb , 2 3tb HDs 2. 256gb ssd, 3tbHD 3. 256 m.2. 1tb ssd
Display(s) 1.LG 50" UHD , oculus rift S.2 MSI Optix MAG342C UWHD. SONY bravia 1080p, . 3.17" 120 hz display
Case 1. Thermaltake P5 2. Thermaltake P3
Audio Device(s) 1 Onboard 2 Onboard 3 Onboard
Power Supply 1.seasonic gx 850w 2. seasonic gx 750w
Mouse 1 ROG Gladius 2 Corsair m65 pro
Keyboard 1. ROG Strix Flare 2. Corsair F75 RBG 3. steelseries RBG
VR HMD rift and rift S and Quest 2.
Software 1. win10 pro 2. win10 pro 3, win10 home
Benchmark Scores 1.7821 cb20 ,cb15 3442 1c 204 cpu-z 1c 539 12c 8847 2. 1106 cb 3.cb 970
every one of my PSUs is 0 rpm untill a load of 50% or so ive a Seasonic gx750, gx850 and corsair RM850i and why i like them apart from Quiet is i dont have to clean them out every 12 months.
 
Joined
May 12, 2017
Messages
1,830 (0.90/day)
I would think there's a better chance of running zero rpm fan speed if you buy a very high output PSU. I use a 1200w PSU & the fan only seems to come in the hot summer months where ambient temperature is a lot higher.
 
Joined
Apr 6, 2021
Messages
589 (0.97/day)
Location
Bavaria ⌬ Germany
System Name ✨ Lenovo M700 [Tiny]
Cooling ⚠️ 78,08% N² ⌬ 20,95% O² ⌬ 0,93% Ar ⌬ 0,04% CO²
Audio Device(s) ◐◑ AKG K702 ⌬ FiiO E10K Olympus 2
Mouse ✌️ Corsair M65 RGB Elite [Black] ⌬ Endgame Gear MPC-890 Cordura
Keyboard ⌨ Turtle Beach Impact 500
Not all components on a PSU are thermally monitored. So I rather have a fan spinning at the lowest speed all the time.

I also think start/stop puts more stress on the fan motor. :cool: Roast me.
 
Joined
Jul 25, 2006
Messages
10,250 (1.72/day)
Location
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 32GB (4 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Logitech M190
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
I despise any type of fan noise
Not as much as me!!! ;) My first love in electronics was audiophile quality audio reproduction (repairing and listening). Record pops and tape hiss were bad enough but fan noise on top of that? No way! Totally unacceptable.
I live in a hot climate area, so I generally disable zero RPM modes.
This really makes no sense to me.

Assuming one does their homework and buys a quality PSU from a quality maker, why not believe the designers know what they are doing?

We are not talking about a totally passive (no fan) PSU as are often used in HTPCs to achieve total silence (at least from the PSU). There is still a fan in these PSUs. And they don't kick in based only on power/current draw. Those fans also spin up (and/or spin faster) when they crossover preset thermal thresholds too. I see no reason not to assume the engineers and designers have set those trigger thresholds at points that will protect the PSUs. Surely they want their products to last at least through the warranty periods.

Now if we are talking about a cheap fan from some generic, no-name maker, all bets are off. But why buy such a PSU in the first place? The PSU is arguably the most important electronic component in our systems since EVERYTHING inside the computer case depends on good, clean, stable power.

I am wondering if it died because it operated without the aid of the cooling fan.
Nah! It died because the stars were aligned against you. Until Man can create perfection 100% of the time, there will always be units that fail prematurely.

I checked and found not a spec of dust inside PSU
But that really does not tell us anything because we know nothing about the computer case this PSU was mounted in. Nor do we know anything about the environment of the room the computer was operated in.

Is it a quality computer case with decent air filters? Is case cooling properly set up with a slight over (positive) pressure to ensure incoming air is only coming through filters (if there are filters)? Is the room climate controlled (through a HVAC filter) or are windows left open much of the year? Do you live in a dusty desert, or lush jungle? Are there rugrats and pets shedding dander and running around stirring up dust?

As noted in my signature, "Heat is the bane of all electronics!" And that certainly is true. But that, in no way, means "all" heat is evil or damaging and must be avoided at all costs. In fact, electronics in general, works best (in terms or stability, performance, and longevity) when operating comfortably within a designated operating range. This is why in extremely cold environment (satellites in space and arctic locations as examples) heaters are used, when necessary, to boost the operating environment temperature.

Also, different components have very different heat tolerance abilities. Power supplies, in general, generate a significant amount of heat. For that reason, the components selected to build those supplies have been selected because they are able to tolerate those expected heat levels.

So while it is critically important to ensure our electronics are never exposed to excessive heat, it is not necessary to get it as cold as possible. There is no reason, for example, to expect a CPU to be more stable, perform better, or last longer if maintained the majority of the time at 20°C instead of 50°C. Now if it spends most of its time up around 90°C and it has a maximum T-junction spec of 100°, that CPU is likely to fail prematurely. Hence the phrase "comfortably within" above.

Are there exceptions to everything I just said? Of course. But exceptions don't make the rule.
 
Joined
Feb 23, 2019
Messages
4,535 (3.29/day)
Location
Poland
Processor Ryzen 7 5800X
Motherboard Gigabyte X570 Aorus Elite
Cooling BeQuiet Dark Rock 4
Memory 2x16 GB Crucial Ballistix 3600 CL16 Rev E @ 3800 CL16
Video Card(s) RTX3080 Ti FE
Storage SX8200 Pro 1 TB, Plextor M6Pro 256 GB, WD Blue 2TB
Display(s) Acer XB273GP
Case SilverStone Primera PM01 RGB
Audio Device(s) SoundBlaster G6 | Fidelio X2 | Sennheiser 6XX
Power Supply SeaSonic Focus Plus Gold 750W
Mouse Logitech G400 | SteelSeries Rival 300
Keyboard MK Typist (Kailh Box White)
Seasonic Focus Plus Gold 750W, semi-passive mode from day 1, can't even tell if/when the fan is kicking in. No problems for 3 years, knock on wood.
 
Joined
Jan 11, 2013
Messages
1,116 (0.31/day)
Location
California
System Name Primary desktop, I have too many desktops, laptops, and servers to list.
Processor Core i5-11600K
Motherboard MSI B560M Pro
Cooling CM 212 Black Edition
Memory 16GB DDR4
Video Card(s) XFX Radeon RX6600 8GB
Storage Kingston NV1 2TB + Crucial MX500 1TB
Display(s) Dell S2721QS 4K 60Hz
Case Asus Prime AP201
Power Supply Thermaltake GF1 850W
Software Win11 Pro
My Phanteks (Seasonic) has this feature, I turned it off so the fan is always running.
Basically the fan is so silent anyway at the low speeds it’s running at, I may as well let it run and let the components stay as cool as possible.
 
Joined
Sep 27, 2008
Messages
110 (0.02/day)
As long as the PSU is good quality, I don't think premature failure would be high up on the list of potential concerns.

FWIW, anecdotally I haven't had any laptop brick style PSUs fail on me, and those are 100% passive. I have a 10+ year old one powering an old Sandy Bridge laptop, a 6+ year old one powering my SFF work PC, and a few other ones whose ages I can't remember off the top of my head.
 
Top