It is currently Fri Dec 26, 2014 2:47 am

All times are UTC - 8 hours




Post new topic Reply to topic  [ 19 posts ] 
Author Message
 Post subject: Massive Fan Update
PostPosted: Tue May 06, 2008 3:07 pm 
Offline
SPCR Reviewer

Joined: Sun Sep 21, 2003 11:23 am
Posts: 1847
Location: Vancouver, BC, Canada
Massive Fan Update


Top
 Profile  
 
 Post subject:
PostPosted: Tue May 06, 2008 3:26 pm 
Offline
Patron of SPCR

Joined: Tue Mar 04, 2008 4:05 am
Posts: 744
Location: London
Whats the cause of the large drop in CFM? Are the fans now tested whilst on a heatsink/case?

_________________
I have no signature!


Top
 Profile  
 
 Post subject:
PostPosted: Tue May 06, 2008 5:41 pm 
Offline

Joined: Mon May 22, 2006 7:01 am
Posts: 192
Location: USA
No PWM (4-pin) 120mm fans?

_________________
David A. Lessnau
Antec Solo w/ Scythe S-Flex SFF21E, Gigabyte GA-EP45T-UD3P, Intel E8400, Kingston KVR1333D3N9K2/4G, MSI N560GTX-Ti Twin Frozr, Thermalright HR-01 Plus w/ Scythe Kama PWM 120mm, SeaSonic S12 II SS-430GB, Pioneer DVR-216DBK, Intel SSDSA2MH160G2C1


Top
 Profile  
 
 Post subject:
PostPosted: Wed May 07, 2008 6:47 am 
Offline
Site Admin

Joined: Sun Aug 11, 2002 3:26 pm
Posts: 12050
Location: Vancouver, BC, Canada
FartingBob wrote:
Whats the cause of the large drop in CFM? Are the fans now tested whilst on a heatsink/case?

I'm responsible for pulling together the new methology article... but I've been swamped with other matters. There's no way to give you a nutshell summary. Please be patient, I hope to have that piece up in a couple days.

Larry is also working on new 120mm fan roundups. That should be done very soon as well.

_________________
Mike Chin, SPCR Editor/Publisher
Support SPCR by buying your gear through these links: NCIX, Amazon and Newegg


Top
 Profile  
 
 Post subject:
PostPosted: Wed May 07, 2008 6:57 am 
Offline
SPCR News Editor

Joined: Thu Feb 10, 2005 11:20 am
Posts: 2178
Location: TN, USA
Are slipstreams in the new 120mm article :?:

_________________
.
Please put a country in your profile if you haven't already.
This site is international but I'll assume you are in the US if you don't tell me otherwise.
RAID levels thread http://www.silentpcreview.com/forums/viewtopic.php?p=388987


Top
 Profile  
 
 Post subject:
PostPosted: Wed May 07, 2008 7:01 am 
Offline
Site Admin

Joined: Sun Aug 11, 2002 3:26 pm
Posts: 12050
Location: Vancouver, BC, Canada
dhanson865 wrote:
Are slipstreams in the new 120mm article :?:

Yup. There will be a whole article devoted to nothing but Scythe fans. They sent us multiple fans of just about every model in their extensive lineup.

_________________
Mike Chin, SPCR Editor/Publisher
Support SPCR by buying your gear through these links: NCIX, Amazon and Newegg


Top
 Profile  
 
 Post subject:
PostPosted: Wed May 07, 2008 1:55 pm 
Offline
Patron of SPCR

Joined: Tue Mar 04, 2008 4:05 am
Posts: 744
Location: London
MikeC wrote:
dhanson865 wrote:
Are slipstreams in the new 120mm article :?:

Yup. There will be a whole article devoted to nothing but Scythe fans. They sent us multiple fans of just about every model in their extensive lineup.

Horray!

_________________
I have no signature!


Top
 Profile  
 
 Post subject: Re: Massive Fan Update
PostPosted: Wed May 07, 2008 2:30 pm 
Offline

Joined: Sun May 04, 2008 7:51 pm
Posts: 69
Location: Tulsa, OK
Wow.

Wish this had come about prior to ordering several Noctua fans at the end of last week. I'm astonished at the vast disparity in the CFM figures from the old methodology to the new.


Top
 Profile  
 
 Post subject: Re: Massive Fan Update
PostPosted: Wed May 07, 2008 3:11 pm 
Offline
Moderator

Joined: Mon Dec 09, 2002 7:11 pm
Posts: 7378
Location: Maynard, MA, Eaarth
Hello,

Fallsroad wrote:
I'm astonished at the vast disparity in the CFM figures from the old methodology to the new.


If they work for you, then does the number of CFM's really matter? :|

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


Top
 Profile  
 
 Post subject: Re: Massive Fan Update
PostPosted: Wed May 07, 2008 3:25 pm 
Offline

Joined: Sun May 04, 2008 7:51 pm
Posts: 69
Location: Tulsa, OK
NeilBlanchard wrote:

If they work for you, then does the number of CFM's really matter? :|


Given I've just installed them today, I cannot answer with any sort of accuracy. :)

The numbers as reported in the reviews do matter for comparative purposes. Notice that the new methodology does not yield a 1:1 difference with any particular fan. The Noctuas apparently fare very poorly in the new testing set up, and that would have impacted my decision to buy them had I been able to have this information prior to buying.

In the end I'm mostly moaning about the near timing of it - I placed my order Friday, they arrived today, I read of the revised data last night. Missed it by a hair. :)

In the end it doesn't exactly matter what the CFM for a particular fan is - if it fits the application and moves as much air as I need it to and is quiet enough, then it is perfect. But those figures do serve a purpose when it comes to trying to determine which fans may best suit my needs in terms of air flow vs. rpm vs. noise.

I didn't mean to complain, by the way. While brand new to the forums I've been reading SPCR for a very long time and hold a deep appreciation for the work done here.


Top
 Profile  
 
 Post subject:
PostPosted: Thu May 08, 2008 2:26 am 
Offline

Joined: Mon Mar 24, 2008 12:49 am
Posts: 5
Location: Canberra
I am not sure why you are concerned about your purchase.
I don't think the Nocturas fair badly...
Looking at the <19dba lines:
Noctura NF-S12-1200 5V <19 dBA@1m 640 RPM 18 CFM 0.60W
Noctura NF-S12-800 9V <19 dBA@1m 660 RPM 18 CFM 0.48W
Scythe Kama Flow 7V <19 dBA@1m 610 RPM 16 CFM 0.27W
Scythe S-Flex 9V <19 dBA@1m 620 RPM 16 CFM 0.27W
Nexus REAL SILENT 7V <19 dBA@1m 680 RPM 19 CFM 0.62W

It doesn't seem the others move any more air when running silently.

_________________
Antec Fusion, Seasonic S12+ 550W PSU, Intel Core 2 Duo E8200 2.66GHz, Scythe Ninja Mini Heatsink (no fan), 2x Noctua NF-S12, Asus P5K-VM, 2GB PC5300 RAM, Gigabyte 8600GT Passive, Hauppauge, 2x WD 1TB GP HDDs, SoundPad


Last edited by brucesm on Thu May 08, 2008 8:43 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Thu May 08, 2008 3:07 am 
Offline

Joined: Thu Dec 22, 2005 9:48 am
Posts: 399
Location: Netherlands
i'm happy with my silenx fans. ;-)

http://www.silentpcreview.com/forums/vi ... hp?t=47722

_________________
solo; 550w neohe; 939a785gmh; x2 4400+; mine; 4gb pc3200c2; m4 128gb; wd20earx 2tb; gt430; imon; lg gh22ns70; sata-bay; floppy/cardreader; x-fi xtreme gamer; dual tv-card; 120mm rear-fan; 2*92mm front-fans; 140mm mobo-fan; 100mm cpu-fan; 50mm vga-fan; bigng; 2*50watt amp; cf-card rescue system; windows 8 pro x64


Top
 Profile  
 
 Post subject:
PostPosted: Thu May 08, 2008 8:29 pm 
Offline

Joined: Sun May 04, 2008 7:51 pm
Posts: 69
Location: Tulsa, OK
brucesm wrote:
I am not sue why you are concerned about your purchase.


I was concerned mainly because the sudden change in data on the heels of placing the order for the fans, kind of threw me off.

Not a huge thing - Noctuas undervolted are doing pretty well, though the NF-P12 makes some unpleasant motor noises using either of the supplied adapters.

That was pretty surprising, as it is neither quiet nor subtle.

In the grand scheme of things, none of this rates. :)


Top
 Profile  
 
 Post subject:
PostPosted: Fri May 09, 2008 5:15 am 
Offline

Joined: Thu Aug 10, 2006 11:07 am
Posts: 316
Hmm, the Noctuas really don't fare well in the airflow department, not after the updated results.

Still, when comparing the Noctua 800 to the Nexus, It looks like the Noctua still beats the Nexus in terms of cooling ability, given that they're on par for noise. Assuming, of course, that the Noctua's in more of a free-air environment, or on a HS with relatively normal fin spacing (Ninja). If airflow is the only change (the article isn't really clear), they're still better fans.

I'm considering replacing my Nexus fans, and even with the updated numbers from the article, the Noctua still looks more attractive. Except for price. They're $10 more expensive on average than the equivalent Nexus.

Of course, now the article has updated information on the Scythe fans, too. Some of them look real interesting, especially the Slipstream and S-Flex. Choices, choices.


Top
 Profile  
 
 Post subject:
PostPosted: Fri May 09, 2008 12:43 pm 
Offline
SPCR News Editor

Joined: Thu Feb 10, 2005 11:20 am
Posts: 2178
Location: TN, USA
brucesm wrote:
I am not sure why you are concerned about your purchase.
I don't think the Nocturas fair badly...
Looking at the <19dba lines:
Code:
Noctua NF-S12-1200  5V <19dBA  640RPM 18CFM
Noctua NF-S12-800   9V <19dBA  660RPM 18CFM
Scythe Kama Flow    7V <19dBA  610RPM 16CFM
Scythe S-Flex       9V <19dBA  620RPM 16CFM
Nexus 120mm         7V <19dBA  680RPM 19CFM


It doesn't seem the others move any more air when running silently.

I cleaned up your lines to match the format I use, now I'll add a few more:
Code:
Slipstream SH 1900  7V  18dBA  630RPM 21CFM
Slipstream  H 1600  5V  21dBA  890RPM 30CFM
Slipstream  M 1200  5V  18dBA  720RPM 24CFM
Slipstream  M 1200  4V <18dBA  620RPM 20CFM
Slipstream  L  800  9V  18dBA  640RPM 21CFM
Slipstream SL  500 12V <18dBA  440RPM 14CFM


Now the H 1600 can't get slow enough to really compete with the first list.

Also the SL 500 doesn't do enough CFM to compete either.

But the M 1200 at 5v or 4v beats any fan on the either list for noise to CFM ratios as far as I can see.

Surprisingly the SH 1900 can be undervolted enough to also best most of those fans.

And the L 800 makes it to the list as better than average.

But then all of this data wasn't available to us before this week so there is little reason to beat yourself up over it. Just take note and buy the better fan next time (fans don't last forever).

btw the data is from Fan Roundup #5: Attack of the 120 Scythes

_________________
.
Please put a country in your profile if you haven't already.
This site is international but I'll assume you are in the US if you don't tell me otherwise.
RAID levels thread http://www.silentpcreview.com/forums/viewtopic.php?p=388987


Top
 Profile  
 
 Post subject:
PostPosted: Fri May 09, 2008 12:56 pm 
Offline
SPCR News Editor

Joined: Thu Feb 10, 2005 11:20 am
Posts: 2178
Location: TN, USA
It's so surprising that the 1900 RPM slipstream is more versatile and quiet capable than the 1600 RPM model that I still find it odd when I look at the data. For that purpose I find it nice to have it all on one page so I made this list:
Code:
Number of samples tested: 2
Slipstream SH 1900 12V  39dBA 1780RPM 79CFM
Slipstream SH 1900  9V  26dBA 1340RPM 54CFM
Slipstream SH 1900  7V  18dBA  630RPM 21CFM
Slipstream SH 1900  5V <18dBA  400RPM 12CFM
Starting voltage 4.7

Number of samples tested: 6
Slipstream  H 1600 12V  32dBA 1460RPM 61CFM
Slipstream  H 1600  9V  29dBA 1250RPM 47CFM
Slipstream  H 1600  7V  24dBA 1080RPM 40CFM
Slipstream  H 1600  5V  21dBA  890RPM 30CFM
Starting voltage 4.2

Number of samples tested: 4
Slipstream  M 1200 12V  28dBA 1210RPM 46CFM
Slipstream  M 1200  9V  24dBA 1030RPM 37CFM
Slipstream  M 1200  7V  21dBA  890RPM 30CFM
Slipstream  M 1200  5V  18dBA  720RPM 24CFM
Slipstream  M 1200  4V <18dBA  620RPM 20CFM
Starting voltage 2.4

Number of samples tested: 2
Slipstream  L  800 12V  19dBA  770RPM 24CFM
Slipstream  L  800  9V  18dBA  640RPM 21CFM
Slipstream  L  800  7V <18dBA  540RPM 18CFM
Slipstream  L  800  5V <18dBA  420RPM 13CFM
Starting Voltage 3.2

Number of samples tested: 6
Slipstream SL  500 12V <18dBA  440RPM 14CFM
Slipstream SL  500  9V <18dBA  350RPM 10CFM
Slipstream SL  500  7V <18dBA  270RPM  6CFM
Slipstream SL  500  5V <18dBA  170RPM  2CFM
Starting Voltage 7.3

again taken from Fan Roundup #5: Attack of the 120 Scythes
I also highly recommend the content in the discussion of that article at silentpcreview.com/forums/viewtopic.php?t=48060

_________________
.
Please put a country in your profile if you haven't already.
This site is international but I'll assume you are in the US if you don't tell me otherwise.
RAID levels thread http://www.silentpcreview.com/forums/viewtopic.php?p=388987


Last edited by dhanson865 on Fri May 09, 2008 7:10 pm, edited 2 times in total.

Top
 Profile  
 
 Post subject:
PostPosted: Fri May 09, 2008 12:57 pm 
Offline

Joined: Thu Apr 10, 2008 1:35 pm
Posts: 57
Location: Sweden
dhanson865 wrote:
Just take note and buy the better fan next time (fans don't last forever).


6 year warranty tho, almost forever :)


Top
 Profile  
 
 Post subject:
PostPosted: Fri May 09, 2008 1:01 pm 
Offline
SPCR News Editor

Joined: Thu Feb 10, 2005 11:20 am
Posts: 2178
Location: TN, USA
lethul wrote:
dhanson865 wrote:
Just take note and buy the better fan next time (fans don't last forever).


6 year warranty tho, almost forever :)


Imagine fuel costs rising every year. If you pay for S&H what is the true cost/value equation of shipping a fan back for warranty replacement?

Depending on what part of the world you are in compared to where you have to ship it to it might actually be cheaper to just buy a new fan for some people. Especially if the fan of choice is less than half the cost of the fan you bought the first time...

_________________
.
Please put a country in your profile if you haven't already.
This site is international but I'll assume you are in the US if you don't tell me otherwise.
RAID levels thread http://www.silentpcreview.com/forums/viewtopic.php?p=388987


Top
 Profile  
 
 Post subject:
PostPosted: Fri May 09, 2008 1:18 pm 
Offline

Joined: Sun May 04, 2008 7:51 pm
Posts: 69
Location: Tulsa, OK
dhanson865 wrote:
Imagine fuel costs rising every year. If you pay for S&H what is the true cost/value equation of shipping a fan back for warranty replacement?

Depending on what part of the world you are in compared to where you have to ship it to it might actually be cheaper to just buy a new fan for some people. Especially if the fan of choice is less than half the cost of the fan you bought the first time...


I suppose I'm about to find out. The Noctua NF-P12 I bought with two NF-S12s is misbehaving, giving off a terrible, loud warbling noise, no matter how fast or slowly it spins.

I'd likely be better off getting a Slipstream 1200 rather than pay to ship the Noctua anywhere. :)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 19 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 2 guests


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