It is currently Thu Dec 18, 2014 6:39 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Fanless PSU with absolutely no electrical buzzing noise?
PostPosted: Fri Mar 23, 2012 4:16 am 
Offline

Joined: Mon Dec 13, 2010 1:09 am
Posts: 21
About a year ago, I searched high and low for a fanless power supply above 400W which was completely silent, but was disappointed with electrical buzzing noises coming from the most recommended power supply (Seasonic X 460).

Is there a fanless power supply now that makes absolutely no buzzing noise whatsoever? Surely it cannot be so hard to make one. If high-end smartphones and ipads can be completely silent, so can computer power supplies!


Top
 Profile  
 
 Post subject: Re: Fanless PSU with absolutely no electrical buzzing noise?
PostPosted: Fri Mar 23, 2012 4:36 am 
Offline
Moderator

Joined: Mon Dec 09, 2002 7:11 pm
Posts: 7375
Location: Maynard, MA, Eaarth
Sometimes it is an interaction between major components in a system, that cause buzzing. The motherboard and the video card in particular can often do this.

_________________
Sincerely, Neil
http://neilblanchard.blogspot.com/


Top
 Profile  
 
 Post subject: Re: Fanless PSU with absolutely no electrical buzzing noise?
PostPosted: Fri Mar 23, 2012 5:56 am 
Offline

Joined: Wed Aug 13, 2008 11:45 am
Posts: 528
Location: 128.0.0.1
It's a defect if a PSU does this. The manufacturer will claim it's within tolerance, but no PSU is designed to buzz.

It's usually power conversion circuitry that emits these noises. Mainboard or graphics cards can emit them too, so can monitors.

Smartphones and tablets run off batteries and don't need to convert 120/230v down. But their chargers do and I've encountered at least one smartphone charger that buzzed/whined.

To sum it up: Buzzing PSUs are like monitors with dead pixels. You shouldn't get one, but you sometimes do. Shop online and return the defective item if necessary.


Top
 Profile  
 
 Post subject: Re: Fanless PSU with absolutely no electrical buzzing noise?
PostPosted: Fri Mar 23, 2012 9:21 am 
Offline

Joined: Fri Jan 20, 2006 10:12 am
Posts: 546
Location: UK
dkslim wrote:
...If high-end smartphones and ipads can be completely silent, so can computer power supplies!

PSUs have some pretty large currents flowing inside them, which mobile devices don't. While I'm sure manufacturers could do better, it is an inherently difficult problem to solve.

_________________
https://mrevil.asvachin.eu/


Top
 Profile  
 
 Post subject: Re: Fanless PSU with absolutely no electrical buzzing noise?
PostPosted: Fri Apr 13, 2012 3:28 am 
Offline

Joined: Thu Sep 04, 2003 4:19 pm
Posts: 261
Location: Dubai
My fanless PSU does not make any electrical noise that I can hear (however, the review on this site claims "you can hear the trace of buzzing and whine common to all power electronic circuits" so if that's true I don't think any PSU will ever be truly silent). While they don't make it anymore, the new 400W PSU from Silverstone looks to have a similar build quality:

http://www.silverstonetek.com/product.p ... 28&area=en

Good Luck

_________________
Intel i7-3770S l Thermalright Venomous X l Asus Sabertooth Z77 l 8GB G.SKILL Sniper Low Voltage l ??? l Samsung 830 256GB l Areca ARC-1200 l WD Caviar GreenPower 1TB (RAID1) l Pioneer BDR-207DBK l Creative X-Fi Titanium HD l Kingwin Stryker l Antec Solo II l HP LP2475w


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: Bing [Bot] and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group