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Fanless Operating Modes

post #1 of 5
8/3/12 at 10:19am
Thread Starter 
A high end power supply that runs without a fan?! Preposterous! Get off my lawn with that nonsense!

.

That's the era I come from when it comes to power supplies wink.gif

So a few questions...

1) Has anyone heard of a power supply overheating because the thermal sensing mechanism failed and the fan never came on? What about the fan failing and someone never noticed because they thought the heat just wasn't getting high enough?

2) I'm concerned that my system may not get hot enough to trigger the fan, but hot enough to keep the power supply nice and toasty all day long. Is this an issue?

I suppose worst case scenario I can always mount an external fan on the power supply.

Thoughts?
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post #2 of 5
8/3/12 at 10:28am
seasonic x series. along with the corsair gold as they are just re-branded.

X-04.jpg
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Cherry Orange
(19 items)
 
Server
(14 items)
  		 
CPUMotherboardGraphicsRAM
Intel i7 870 [ 4ghz-1.3v] Asus Maximus III Gene EVGA Gtx 480 Superclocked [833-1666-2000] 4x2gb Mushkin Blackline [1600mhz 7-9-7-24 2T] 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 830 128gb 2x Western Digital Caviar Blue WD3200AAKS in Ra... Seagate Barracuda 7200.12 ST31000528AS Asus DRW-24B1ST a 
CoolingOSMonitorKeyboard
Apogee XT/Koolance vid-nx480/RX360 Last 7 Samsung 2343Bwx Logitech G110 
PowerCaseMouseMouse Pad
Seasonic X-series 660w Gold Fractal Design Define R3 Mionix NAOS 8200 OCZ Bahemith 
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post #3 of 5
8/3/12 at 10:29am
I assume you are talking about PSUs that have fans that only turn on at higher loads like some Seasonics?


As with all electronics, there are a multitude of failure scenarios. Thermal sensors are reliable solid-state technology and I would not be concern. The fan will turn on when the PSU deems it needs to.... it generates heat as well.
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post #4 of 5
8/3/12 at 10:39am
It's much more likely for a fan to fail than the sensor to fail, so I wouldn't be that concerned.

Also, these power supplies have warranties, overtemperature protection (shuts off when it gets too hot), etc. If it was a problem that might affect a significant number of units, don't you think the manufacturers would think twice before slapping on 5-7 year warranties?

A lot of high-end power supplies these days don't have a fanless mode at low loads anyway, so it's not like you have to pick one with this feature. There are plenty of alternatives available.
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post #5 of 5
8/3/12 at 11:09am
Thread Starter 
Thanks for the comments, much appreciated smile.gif
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