It is currently Mon Dec 22, 2014 3:28 am

All times are UTC - 8 hours




Post new topic Reply to topic  [ 10 posts ] 
Author Message
 Post subject: fanless PSU in NSK2480
PostPosted: Sun Dec 30, 2012 3:37 pm 
Offline

Joined: Fri Dec 07, 2012 9:10 pm
Posts: 17
Would it be wise to run a fanless PSU in one of these cases? I read that fanless PSU's require some moving air. Due to the 3 chamber design, the PSU will be left by itself. Would it be OK, or would it cook?


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Mon Dec 31, 2012 9:19 am 
Offline

Joined: Mon Mar 17, 2008 1:49 pm
Posts: 1256
Location: UK
If it is an old (+5 yrs) passive PSU then you might expect it to require additional airflow. Modern passive PSUs produce so little heat that they do not need additional airflow and in addition it is not a good idea to blow a load of hot air into them.

The NSK2480 does not have the best level of venting around the PSU but this should be fine if you are only running a media PC with a relatively low powered set of components. Ask it to supply 400W and you might have a lot of heat building up but naturally at 100W there is less heat fighting inside the PSU and a little heat from a hard disk to the front of the PSU.

_________________
Silverstone SG03B: E8200, Asus P5E-VM HDMI, 2Gb RAM, Leadtek 9600GT+S1 rev. 2, Samsung 500Gb, Seasonic X-400, 2x Akasa 120mm, Scythe Zipang 2 fanless


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Thu Jan 03, 2013 2:44 am 
Offline

Joined: Fri Dec 07, 2012 9:10 pm
Posts: 17
I was looking at getting the Seasonic Platinum Fanless 520W. Would it be ok powering an i3 3220, a 6870, and some hard drives?


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Thu Jan 03, 2013 4:03 am 
Offline

Joined: Mon Mar 17, 2008 1:49 pm
Posts: 1256
Location: UK
The 520 is a bit over the top for that. Your total power draw will be less than 250W. The Radeon 6870 does have 2x6-pin power connectors which does rule out using some PSUs without an adaptor but you should at least drop to the Seasonic Platinum 460 fanless. It'll save you some money and be more efficient in this power bracket.

_________________
Silverstone SG03B: E8200, Asus P5E-VM HDMI, 2Gb RAM, Leadtek 9600GT+S1 rev. 2, Samsung 500Gb, Seasonic X-400, 2x Akasa 120mm, Scythe Zipang 2 fanless


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Thu Jan 03, 2013 6:55 pm 
Offline

Joined: Fri Dec 07, 2012 9:10 pm
Posts: 17
Thank you, A Seasonic 460 it is. I was originaly planning on a 400, but I realized it didn't have the 2 6 pin PCIe connectors, so I moved up to the 520.


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Thu Jan 03, 2013 9:57 pm 
Offline

Joined: Wed Jun 08, 2005 4:38 am
Posts: 253
edh wrote:
If it is an old (+5 yrs) passive PSU then you might expect it to require additional airflow. Modern passive PSUs produce so little heat that they do not need additional airflow and in addition it is not a good idea to blow a load of hot air into them.
.


what does a regular PSU do that a passive PSU Cannot do?


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Fri Jan 04, 2013 3:15 am 
Offline

Joined: Mon Mar 17, 2008 1:49 pm
Posts: 1256
Location: UK
Happy Hopping wrote:
what does a regular PSU do that a passive PSU Cannot do?

Blow. :D

_________________
Silverstone SG03B: E8200, Asus P5E-VM HDMI, 2Gb RAM, Leadtek 9600GT+S1 rev. 2, Samsung 500Gb, Seasonic X-400, 2x Akasa 120mm, Scythe Zipang 2 fanless


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Fri Jan 04, 2013 11:04 am 
Offline

Joined: Sun Dec 09, 2012 5:46 pm
Posts: 8
Location: San Clemente, CA, USA
edh wrote:
Happy Hopping wrote:
what does a regular PSU do that a passive PSU Cannot do?

Blow. :D

Or suck. Depends on your perspective. :)


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Sat Jan 05, 2013 10:23 pm 
Offline

Joined: Wed Jun 08, 2005 4:38 am
Posts: 253
according to silent pc review, there is no good silent PSU, they all sucks :mrgreen:


Top
 Profile  
 
 Post subject: Re: fanless PSU in NSK2480
PostPosted: Sun Jan 06, 2013 3:17 am 
Offline

Joined: Mon Mar 17, 2008 1:49 pm
Posts: 1256
Location: UK
No, modern PSUs with fans all work by positive pressure cooling so they blow, not suck. I still have a very early 250W ATX PSU where a 92mm fan was mounted onto the underside of the PSU and it worked by negative pressure, exhausting air onto the CPU to increase cooling. Most early ATX PSUs worked this way and hence sucked (negative pressure). I have since modified this PSU with a 120mm fan mounted internally, thus cooling by positive pressure. Therefore it no longer sucks but instead blows (postive pressure).

_________________
Silverstone SG03B: E8200, Asus P5E-VM HDMI, 2Gb RAM, Leadtek 9600GT+S1 rev. 2, Samsung 500Gb, Seasonic X-400, 2x Akasa 120mm, Scythe Zipang 2 fanless


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 10 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: Exabot [Bot], Yahoo [Bot] and 3 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