From: gjp@sei.cmu.edu (George Pandelios)
Subject: Re: CPU Fans
Organization: The Software Engineering Institute
Lines: 54


In article <1993Apr20.122812.2441@mfltd.co.uk>, nmp@mfltd.co.uk (Nic Percival (x5336)) writes:
|> 
|> Just got a 66MHz 486DX2 system, and am considering getting a fan for the
|> CPU. The processor when running is too hot to touch so I think this is a
|> fairly good idea. (long ago when I did some electronics training I read
|> somewhere that the regions within a chip that define junctions/gates etc
|> slowly diffuse over time and this increases with temperature, hence a hot
|> chip goes off-spec sooner)
|> 
|> Has anyone out there got a CPU fan??
|> Is there more than 1 type?
|> Do you have to remove the CPU from its scoket to install the fan?
|> Do all CPU fans derive their power from spare drive power lines?
|> Anyone had any trouble with CPU fans?
|> Does anyone have any evidence that CPU fans are a complete waste of money?
|> How are these fans attached? (glue? clips? melted cheese?)
|> Roughly how much cooler will the CPU be with a fan as opposed to without?
|>   (an advert I've read claims 85F vs 185F)
|> 
|> Any info appreciated,
|> -- 
|>  +-- Nic Percival ----------+- "Well that was a piece of cake, eh K-9?" -----+
|>  |   Micro Focus, Newbury.  |  "Piece of cake master? Radial slice of baked  |
|>  |   (0635) 32646 Ext 5336. |   confection... - coefficient of relevance to  |
|>  +-- nmp@mfltd.co.uk -------+-  Key to Time: zero." - Dr. Who ---------------+

I own a PC FanCard II, which is a slightly different beast.  It's a long card
that plugs into an 8 or 16 bit slot and contains two muffin fans.  It requires
no extra cabling.  I had a 286 that was experiencing some problems due to
heat.  The FanCard made the system run cool enough so that the problem no
longer appears.  It's supposed to keep the internal temperature in the range
of 75-95 degrees Fahrenheit.  According to the maker's (M.S. Tech)
advertisements, the US Army used a bunch of these to keep their PCs running
(w/o a/c) in Desert Storm.  I can't vouch for that.  However, I am a satisfied
customer.  And I have no other connection with the maker or the mail-order
house (Lyben  (313) 268-8100).

Hope this helps,

George
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  George J. Pandelios				Internet:  gjp@sei.cmu.edu
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