It is currently Wed Jul 30, 2014 4:20 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2
Author Message
 Post subject:
PostPosted: Mon Sep 16, 2002 7:29 am 
Offline

Joined: Sun Aug 11, 2002 3:26 pm
Posts: 262
Location: Worcester, UK
Theres another ZM80-HP review here too:

http://solidmercury.net/reviews/zm80-hp/zm80-hp_1.php


apparently the heat pipe is gold plated! and theres a review of a funky looking new Zalman P4 HS here:

http://www.frostytech.com/articleview.c ... cleID=1220

_________________
Computers should be seen and not heard...


Top
 Profile  
 
 Post subject:
PostPosted: Mon Sep 16, 2002 6:29 pm 
Offline
Patron of SPCR

Joined: Sun Aug 11, 2002 3:26 pm
Posts: 99
Location: Columbus, OH USA
Well, it looks like the ZM80-HP is available in the US now.

http://www.frozencpu.com/cgi-bin/frozencpu/vid-10.html

and

http://www.sharkacorp.com/cgi-bin/TLSst ... no=zm80-hp


Top
 Profile  
 
 Post subject:
PostPosted: Fri Sep 20, 2002 11:26 am 
Offline

Joined: Sun Aug 11, 2002 3:26 pm
Posts: 35
Quote:
Yes, I think putting the fan in its "normal" place atop the PAL8942 may work better (with a duct) for these reasons:

1) The fan is deeper inside the case--so it generates less noise.
2) It is positioned right next to the heat source (CPU), so it should be more efficient at pumping hot air. Farther positions may be less effective due to air friction.
3) I can completely cut out the perforated-metal exhaust grille (in my case's back panel), reducing friction for outgoing air. This means I will have an 80mm round hole in the back wall of the computer, to which the duct will connect.
4) The problem of air pressure is solved, because the fan is now pumping hot air INTO the duct.


This might be better cooling-efficiency-wise, but NOT in terms of noise reduction. If the fan is attached on top of a CPU HS, it causes HS vibration, which is then transmitted to a motherboard, eventually to the case. It seems slight noise reduction achieved by 1) is more than off-set by an increase in noise due to fan-HS vibration. I have confirmed this empirically with other HSs.

You can do 3) irrespective of a fan position and that is always desirable. 4) is a moot point, to begin with, if you use right materials for the duct.

If you want to put a fan over HS, it is better to use a bracket that enables you to put a fan right next to HS without touching it, but, in this case, you have to make two ducts, one for connecting HS and a fan and the other for connecting a fan and a rear hole.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 33 posts ]  Go to page Previous  1, 2

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users 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