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PostPosted: Fri Mar 26, 2010 11:12 am 
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Joined: Thu Apr 14, 2005 8:35 pm
Posts: 201
Location: Allen, TX US
I have a suggestion: You already list the startup voltage, but I'd also like to see the RPM of the free standing fan at the startup voltage. The would give me an estimate of the minimum RPM that could be used as a case fan for most situations.


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 Post subject:
PostPosted: Fri Mar 26, 2010 12:44 pm 
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Joined: Thu Feb 18, 2010 7:04 am
Posts: 11
Location: Europe
NeilBlanchard wrote:
Hi,

Are you listening to them installed or in the free air? If they making noise while installed, it may be that the grills are causing the noise?


I was listening to the fans inside the case, attached using the rubber pins - you are right, it could be odd turbulence, although it would seem strange that this is not as audible using other fans (like the Silverstones) - I will check it out and report back.

Thank you.


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 Post subject:
PostPosted: Wed Mar 31, 2010 12:45 pm 
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Joined: Tue Mar 30, 2010 5:24 pm
Posts: 10
Location: Miami
First I want to say thanks for making these reviews-they save so much time and make life easier on a lot of us! I was wondering since this review was last updated in 2007 if there were any changes in which fans were best...like any new models or anything.


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 Post subject:
PostPosted: Wed Mar 31, 2010 1:01 pm 
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Joined: Sun Aug 11, 2002 3:26 pm
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Location: Vancouver, BC, Canada
motamedn wrote:
First I want to say thanks for making these reviews-they save so much time and make life easier on a lot of us! I was wondering since this review was last updated in 2007 if there were any changes in which fans were best...like any new models or anything.

There are many new models... and we're just setting up a brand new fan testing rig to test up the many dozens of fans in our collection now.

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 Post subject:
PostPosted: Wed Mar 31, 2010 1:31 pm 
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Joined: Tue Mar 30, 2010 5:24 pm
Posts: 10
Location: Miami
Cool! Thanks for the quick response. Any idea when that will be out? Are you going to update the case recommendations too or are those continuously updated?


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 Post subject:
PostPosted: Sat Apr 03, 2010 2:55 pm 
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Joined: Thu Feb 04, 2010 6:06 pm
Posts: 3395
Location: US
MikeC wrote:
motamedn wrote:
First I want to say thanks for making these reviews-they save so much time and make life easier on a lot of us! I was wondering since this review was last updated in 2007 if there were any changes in which fans were best...like any new models or anything.

There are many new models... and we're just setting up a brand new fan testing rig to test up the many dozens of fans in our collection now.


Mike,

Please consider doing a side article on high impedance performance, CFM, and noise. There is a relationship I believe, but the only people who have access to that data are the fan manufacturer engineers.

NMB to my recollection publishes some pretty good info (except for the noise part) with nice graphs showing CFM against fan speed and impedance. If you got an NMB fan from Dorothy Bradberry, you could use that as a reference fan with respect to those attributes of fan performance.


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 Post subject:
PostPosted: Sat Apr 03, 2010 6:17 pm 
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Joined: Tue Feb 16, 2010 8:20 pm
Posts: 56
Location: Tucson, AZ
MikeC wrote:
motamedn wrote:
First I want to say thanks for making these reviews-they save so much time and make life easier on a lot of us! I was wondering since this review was last updated in 2007 if there were any changes in which fans were best...like any new models or anything.

There are many new models... and we're just setting up a brand new fan testing rig to test up the many dozens of fans in our collection now.


Awesome news! Here are the fans I'd love to see:

Arctic F12 (frame) and F12 Pro (frameless) - these are like Slip Streams but with fluid bearings which should be better
Noctua NF-S12B - new revision
Akasa Apache
Scythe Gentle Typhoon

Do you have any of these? If not, I'd be happy to donate at least a few. And I'm sure the rest of the community would be happy to help out as well.


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 Post subject:
PostPosted: Sun Apr 04, 2010 7:07 pm 
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Joined: Thu Feb 04, 2010 6:06 pm
Posts: 3395
Location: US
eddieck wrote:
Awesome news! Here are the fans I'd love to see:

Arctic F12 (frame) and F12 Pro (frameless) - these are like Slip Streams but with fluid bearings which should be better
Noctua NF-S12B - new revision
Akasa Apache
Scythe Gentle Typhoon


See:
"Which PWM, CPU or Specialty Fan do you Want SPCR to Review?"
http://www.silentpcreview.com/forums/vi ... hp?t=58350


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 Post subject: Background noise correction/missing fan recommendation?
PostPosted: Thu May 06, 2010 4:53 pm 
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Joined: Sun May 17, 2009 9:26 am
Posts: 59
Location: North America
It seems many of these tests were done with background noise level of about 18dBA, newest chamber has about 11dBA.

Are the reported noise levels corrected for background level? If not, when SPRC reports ~18dBA, the fan probably has more than 5dBA less than this, right? since you need to add a noise source of at most 5dBA lower than the source you are looking at to get 1dBA increase? (if I read the theory/calc articles right, eg 20dBA + 15dBA gives 21dBA)

The artilce on the SCYTHE SLIP STREAM SY1225SL12M says it is quite a perfomer re CFM/dBA ratio, pushing as much as 30% more air at the same dBA levels as all the others. Not on this list though, guess it is not updated after the slip stream testing???

By the way, as a physicist, I like to create performance graphs, specifically cfm on y axis, dBA on x-axis. Makes comparison of fan performance easier...for instance you can see noise levels for two fans set at same cfm easily. SPCR might think about this visually intuitive presentation in the future. This graph really makes the slip stream stand out.

EDIT: turns out the Scythe Slip Stream data was published just days before the announcement CFM data was suspect. Did not find any updated CFM, so ignore my comment on this fan belonging in recommended list. Comment on CFM/dBA graphs stands.


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 Post subject: Re: Recommended Fans page
PostPosted: Sat Mar 05, 2011 12:22 pm 
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Posts: 29
Location: Seattle-to-Tacoma Strip
Re: 2011 update to recommended fans, using new (2010) test System as noted in May 2010 article???

Hi, I need to buy new fans for my current build, and I don't know if the latest lists are any good--can't find orange Nexus fans. My stock of new fans is back to pre-Noctua introduction and tests (2007?). I have a box of unused Antec 3-speed fans.

Will the fans list be updated soon?

Thanks,
Bruce

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 Post subject: Re: Recommended Fans page
PostPosted: Sat Jun 23, 2012 1:03 am 
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Posts: 143
Location: Melbourne, Oz
With Thin Mini-ITX systems coming to the fore, any recommendations on quiet off-the-shelf blower fans, the sort you normally see in laptops?

:)


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 Post subject: Re: Recommended Fans page
PostPosted: Wed Sep 26, 2012 8:26 am 
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Joined: Sun Aug 11, 2002 3:26 pm
Posts: 11942
Location: Vancouver, BC, Canada
Recommended Fans totally updated 26 Sept 2012 -- 9 & 8 cm fans need re-examination, though.

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 Post subject: Re: Recommended Fans page
PostPosted: Wed Sep 26, 2012 11:20 am 
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Location: Portugal
More and more cases are starting to use 140mm fans. Perhaps it's time for SPCR to pay them more attention? :) Especially considering 120mm fans are pretty much covered.

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 Post subject: Re: Recommended Fans page
PostPosted: Thu Sep 27, 2012 9:23 am 
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Joined: Mon Feb 21, 2005 9:08 pm
Posts: 35
I arise from my long lurk to say:

Typo in Tonality : Pink Noise s/neature/nature

Also, thank you for the update.


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 Post subject: Re: Recommended Fans page
PostPosted: Thu Sep 27, 2012 10:34 am 
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Location: Maynard, MA, Eaarth
There are three 140mm fans on the recommended list.

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http://neilblanchard.blogspot.com/


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 Post subject: Oops!
PostPosted: Thu Sep 27, 2012 4:55 pm 
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Joined: Tue Dec 06, 2011 5:45 pm
Posts: 6
I think 92cm fans are a bit large :D Might wanna make that 92mm.


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 Post subject: Re: Recommended Fans page
PostPosted: Wed Oct 03, 2012 1:21 am 
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Joined: Tue May 08, 2012 12:27 pm
Posts: 29
Location: Princeton, US
Love these write-ups and updates of 'recommended' articles, THANK YOU, really appreciated!


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 Post subject: Re: Recommended Fans page
PostPosted: Sun Oct 28, 2012 11:46 am 
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Joined: Wed Feb 01, 2012 1:41 pm
Posts: 7
can anyone reccomend any 120mm pwm fans to replace the two antec ones in my antec veris fustion black? or any other 120mm ones thanks

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