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Changing PSU Fan, go with static pressure fan? or air flow?

post #1 of 7
Thread Starter 
Right now i have a Rosewill Capstone 650W PSU and it is indeed silent on idle, but as soon as i start playing a game into load; the fan gets so loud!

I dont plan on changing my PSU; as everything is already wired and cable managed, but i was wondering if i could change the fan to a more silent one without putting my PSU at risk of thermal degradation. -- Meaning, still maintaining the same "air flow" my current fan does, but with a quieter, more advanced fan blade design

Could i switch it out with a more expensive Noctua fan? Does it have to be high in static pressure? Or can it be one of those air flow focused fans, like an AF140, instead of going for a pressure fan like an SP120 or Gentle Typhoon.... ?

What fan should i go for?

Currently at 100% load it is too loud for my liking and i dont want to buy a new PSU. It is currently the loudest thing in my PC, my fans are absolutely dead silent at the distance i play from my PC, but the PSU is definitely audible and i wish to minimize that noise as much as i can without having to buy a new PSU.
post #2 of 7

High static pressure, and high CFM if you can find that combo. The reason being is, the fan needs to dissipate the heat quickly from a space that's only an inch or two away from it. It's the same as choosing a fan for a CPU heatsink.

It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 7
Sense we expect fans to move air we can't have good cfm in a computer without have good static pressure rating as well as a good cfm rating. Can't use one without the other. Fans with high cfm and low mm H2O will not move much if any air with the restriction grill, filter, cables, etc. create. But a medium cfm fan with high mm H2O will keep right on moving a nice flow of air through restrictions. wink.gif
Edited by doyll - 3/26/14 at 2:16pm
post #4 of 7
definitely high static pressure. PSU are extremely packed inside and REQUIRES high static pressure to push the air inside to cool down all the components. this is the main reason why PSU fans can be loud. they use high RPM to generate the high static pressure needed to push air through the cramped components inside.
post #5 of 7
Thread Starter 
So would i be better off going with a fan like a Gentle Typhoon or SP140 instead of going for a Noctua or AF140 fan?
post #6 of 7
Quote:
Originally Posted by Aesthethc View Post

So would i be better off going with a fan like a Gentle Typhoon or SP140 instead of going for a Noctua or AF140 fan?

 

Which ever one has the highest pressure rating is the best one to use.

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #7 of 7
Quote:
Originally Posted by Aesthethc View Post

So would i be better off going with a fan like a Gentle Typhoon or SP140 instead of going for a Noctua or AF140 fan?


Actually, a GT would be about perfect. Noctua NF-P12 and NF-A14 are good examples of all-around balanced fans that would also work well.

alpha updated
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secundus
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alpha updated
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secundus
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CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
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