It appears you have not yet registered with our community. To register please click here...

 
Go Back [M] > Madshrimps > Articles & Howto's
120mm Fan Roundup: 17 Fans Compared 120mm Fan Roundup: 17 Fans Compared
FAQ Members List Calendar Search Today's Posts Mark Forums Read


120mm Fan Roundup: 17 Fans Compared
Reply
 
Thread Tools
Old 24th March 2006, 21:05   #11
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,021
jmke has disabled reputation
Default

yes I know, that's why they are there and included dBA value doesn't tell everything and even the sound samples can be confusing
__________________
jmke is offline   Reply With Quote
Old 24th March 2006, 21:10   #12
Rutar
 
Posts: n/a
Default

sound samples of fans are difficult because they depend on the sound setup of the reader as well, they are nice for HDs but for fans they can be misleading
  Reply With Quote
Old 24th March 2006, 21:14   #13
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,021
jmke has disabled reputation
Default

maybe a compilation of all the samples to shed more light on it? small movie with sound & pics?
__________________
jmke is offline   Reply With Quote
Old 24th March 2006, 21:27   #14
Rutar
 
Posts: n/a
Default

that would be intresting if it's done at a similar RPM
  Reply With Quote
Old 24th March 2006, 21:56   #15
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,021
jmke has disabled reputation
Default

that's pretty much a job which can not be done, the way I tested the fan "subjectively" was by hooking them to an old PSU where I removed all fans from and did this in a dead quiet room.

to get the RPM readings and change them so they would all the same I have to make sure that the RPM monitor on the mobo is trustworthy or not... and then get a system running but that adds noise, the HDD is really responsible for an elevated ambient noise reading.
__________________
jmke is offline   Reply With Quote
Old 26th March 2006, 04:30   #16
Alastor
 
Posts: n/a
Default

The article really annoyed me, and this is why: I think there's a significant group of people who would benefit from a quality review of 120mm fans, problem is, this one is a tease. With an "ambient room noise" of 34db, how are we supposed to decide which fans are the quietest? Say fan X is 22db, and fan Y is 32db. On the madshrimps test chart, they're equally ranked, because the damned room is so loud that you can't tell the difference! Come on guys, you can do better...
  Reply With Quote
Old 26th March 2006, 09:37   #17
[M] Reviewer
 
Join Date: Jun 2002
Posts: 5,003
piotke Freshly Registered
Default

34 db is dead silent.

The values mentionned by manufacturers are tested in special room, and not a real world situation....

As 34 is unhearable, there is no difference between 22 or 33 dba....
__________________
.
piotke is offline   Reply With Quote
Old 26th March 2006, 13:42   #18
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,021
jmke has disabled reputation
Default

Quote:
Originally posted by Alastor
because the damned room is so loud that you can't tell the difference! Come on guys, you can do better...
maybe you should look up HOW <30dBA readings how measured. how much is costs to build a room capable of such low noise levels and how much an accurate <30dBA dBA meter costs

I'm convinced, that right now, in your room, without any PCs running you have >30dBA ambient noise.
__________________
jmke is offline   Reply With Quote
Old 26th March 2006, 13:52   #19
Madshrimp
 
jmke's Avatar
 
Join Date: May 2002
Location: 7090/Belgium
Posts: 79,021
jmke has disabled reputation
Default



from www.globalwin.com.tw similar docs can be found at other companies, following ISO standards

[attachment]
http://www.iso.org/iso/en/CatalogueD...CSNUMBER=21750

Also check out this article: http://www.madshrimps.be/gotoartik.php?articID=268
__________________
jmke is offline   Reply With Quote
Old 26th March 2006, 23:08   #20
Alastor
 
Posts: n/a
Default

I am in a quiet living room. The ambient sound is probably 20-23db or so. When I have a Vantec Stealth fan rated 28db on, I can EASILY hear it, and it annoys me. So if the room was 30db as you say, I wouldn't be able to easily hear that fan.
  Reply With Quote
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
120mm Fan Roundup - 25 Models Compared jmke WebNews 0 22nd February 2010 13:48
120mm Fan Roundup ~ 11 Fans Tested (no noise tests) jmke WebNews 0 20th January 2010 09:21
30x 120mm Fans Roundup - Tested on WC Radiator jmke Articles & Howto's 6 19th May 2009 20:51
[M] 30x 120mm Fans Roundup - Tested on WC Radiator jmke WebNews 1 19th May 2009 16:44
120mm Fan Roundup - 35 Models Compared jmke Articles & Howto's 3 15th February 2009 23:26
New Concept Case Fan?! - Slip Stream 120mm Case Fans Sidney WebNews 0 15th November 2007 02:42
120mm Fans Roundup Part 2 jmke WebNews 0 25th May 2007 16:10
Four 120mm Fans Compared jmke Articles & Howto's 1 7th December 2006 21:56
120mm Fan Roundup jmke WebNews 0 5th December 2006 17:46
120mm Fan Roundup jmke Articles & Howto's 64 31st January 2006 22:29

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


All times are GMT +1. The time now is 09:44.


Powered by vBulletin® - Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO