Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
when they all come with 4 pin headers?

I guess the 4th pin on the motherboard header is for fan control

Trying to find a decent quiet copper based heatsink/fan with copper pipes
but all have 3 pins and my motherboard has 4 pin header.

Try looking here:
<http://www.newegg.com/Product/ProductList.aspx?Submit=Property&Subcategory=574&Description=&Type=&N=2010110574&srchInDesc=&MinPrice=&MaxPrice=&PropertyCodeValue=3710%3A26035&PropertyCodeValue=3710%3A28497&PropertyCodeValue=3710%3A29046&PropertyCodeValue=3710%3A26050&PropertyCodeValue=3710%3A26039&PropertyCodeValue=3710%3A26669&PropertyCodeValue=3710%3A26042&PropertyCodeValue=3710%3A26049&PropertyCodeValue=3710%3A28496&PropertyCodeValue=3715%3A26081&PropertyCodeValue=3715%3A26082&PropertyCodeValue=3718%3A26065&PropertyCodeValue=3718%3A26066>

On Mon, 4 Jun 2007 11:22:09 +1200, "Clayton"
<(E-Mail Removed)> wrote:

>Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
>when they all come with 4 pin headers?
>
>I guess the 4th pin on the motherboard header is for fan control
>
>Trying to find a decent quiet copper based heatsink/fan with copper pipes
>but all have 3 pins and my motherboard has 4 pin header.
>

Clayton wrote:

> Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
> when they all come with 4 pin headers?
>
> I guess the 4th pin on the motherboard header is for fan control
>
> Trying to find a decent quiet copper based heatsink/fan with copper pipes
> but all have 3 pins and my motherboard has 4 pin header.
>
>

What cheap heatsink/fans are you getting? We have gotten HSF's that
are designed, made and sold specifically for LGA775 installations and
all of our's have 4-pin CPU fans attached to the heatsink.

http://linse.org/blog/2006/12/beware...r-btx-fan.html

--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)


"Clayton" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
> when they all come with 4 pin headers?
>
> I guess the 4th pin on the motherboard header is for fan control
>
> Trying to find a decent quiet copper based heatsink/fan with copper pipes
> but all have 3 pins and my motherboard has 4 pin header.
>
>

I'd agree with you totally Sylvain. My hubby's PC had the stock Intel Dual
Core heatsink and fan with 4 pins and it ran at full speed the whole time
making the room sound like our local airport. I replaced it with
http://www.newegg.com/product/produc...82E16835106069

and not only does it run MUCH quieter, it's also 25 degrees cooler!
--
Cari (MS-MVP)
Windows Technologies - Printing & Imaging
http://www.coribright.com/windows

"Sylvain Lafontaine" <sylvain aei ca (fill the blanks, no spam please)>
wrote in message news:(E-Mail Removed)...
> http://linse.org/blog/2006/12/beware...r-btx-fan.html
>
> --
> Sylvain Lafontaine, ing.
> MVP - Technologies Virtual-PC
> E-mail: sylvain aei ca (fill the blanks, no spam please)
>
>
> "Clayton" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
>> when they all come with 4 pin headers?
>>
>> I guess the 4th pin on the motherboard header is for fan control
>>
>> Trying to find a decent quiet copper based heatsink/fan with copper pipes
>> but all have 3 pins and my motherboard has 4 pin header.
>>
>>
>
>

On Mon, 4 Jun 2007 11:22:09 +1200, "Clayton"
<(E-Mail Removed)> wrote:

>Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
>when they all come with 4 pin headers?
>
>I guess the 4th pin on the motherboard header is for fan control
>
>Trying to find a decent quiet copper based heatsink/fan with copper pipes
>but all have 3 pins and my motherboard has 4 pin header.
>

Why do you ask HERE when your question has nothing to do with the XP
OS?

Ask elsewhere.

I want to replace the stock Intel HSF with something quiet, has copper heat
pipes and fan with 4 pin, what is the best? the Intel one supplied with the
CPU is far to noisy and is only aluminium, I hear copper is better for the
heat than aluminium is


"GHalleck" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
>
> Clayton wrote:
>
>> Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
>> when they all come with 4 pin headers?
>>
>> I guess the 4th pin on the motherboard header is for fan control
>>
>> Trying to find a decent quiet copper based heatsink/fan with copper pipes
>> but all have 3 pins and my motherboard has 4 pin header.
>>
>>
>
> What cheap heatsink/fans are you getting? We have gotten HSF's that
> are designed, made and sold specifically for LGA775 installations and
> all of our's have 4-pin CPU fans attached to the heatsink.

Clayton wrote:
> I want to replace the stock Intel HSF with something quiet, has copper heat
> pipes and fan with 4 pin, what is the best? the Intel one supplied with the
> CPU is far to noisy and is only aluminium, I hear copper is better for the
> heat than aluminium is

The fluid in the heat pipes is hundreds of times more effective at moving
heat, than just metal. The heatpipe(s) should be as close as possible to the
top of the chip package, so they can directly carry the heat from there,
into the fins. Heatpipes are a means, to make distant fins as
effective as if they were right on top of the lid. Normally, the
spread of heat in a solid chunk of metal, reduces the effectiveness
of fins that are a distance from the heat source. With heatpipes at
work, an aluminum fin can be almost as good as a copper one, especially
if the fin is not that tall to begin with. (A tall fin would rely on
the conduction properties of the fin moreso than a less-tall fin.)

The only downside of heat pipes, is they can fail. For example, there is a
tiny quantity of fluid inside the heat pipe, and if that leaves the pipe
for any reason, the pipe is then just a piece of metal. Which is why
it is good if the cooler design uses more than one pipe - if one pipe
fails, you still get some cooling effect from the remaining pipes.

This one has a four pin fan on it, at least as depicted in the
installation manual. There may be others with four pin fans.

http://www.zalman.co.kr/eng/product/...x=231&code=009

The diameter of the cooler is such, that it can bump into the
power supply, if it is turned a certain way. The compatibility
page demonstrates the kind of gap that should exist, between the
bottom surface of the power supply, and the upper edge of the
motherboard. Since your system is already assembled, it should be
pretty easy to check the clearance between the power supply
bottom surface, and the edge of the motherboard. (In using this
link, my assumption is the 9500AT and the 9700NT have the same
dimensions. Actually, when I look at the 9500 AT installation
manual, it has a four pin connector on the fan as well.)

(9500 AT page - where I got the second link)
http://www.zalman.co.kr/eng/product/...x=193&code=009

(9500 compatibility page)
http://www.zalman.co.kr/product/cool...D_775_eng.html

Paul

>
>
> "GHalleck" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
>> Clayton wrote:
>>
>>> Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
>>> when they all come with 4 pin headers?
>>>
>>> I guess the 4th pin on the motherboard header is for fan control
>>>
>>> Trying to find a decent quiet copper based heatsink/fan with copper pipes
>>> but all have 3 pins and my motherboard has 4 pin header.
>>>
>>>
>> What cheap heatsink/fans are you getting? We have gotten HSF's that
>> are designed, made and sold specifically for LGA775 installations and
>> all of our's have 4-pin CPU fans attached to the heatsink.
>
>

I don't know what the big deal with heatpipes is... A heatpipe can't
transfer heat better than solid metal.

Copper is better, but not a whole lot.

If you want quiet, you want to look for two things... A thermally controlled
fan and a large fan.

"Clayton" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
>I want to replace the stock Intel HSF with something quiet, has copper heat
>pipes and fan with 4 pin, what is the best? the Intel one supplied with the
>CPU is far to noisy and is only aluminium, I hear copper is better for the
>heat than aluminium is
>
>
> "GHalleck" <(E-Mail Removed)> wrote in message
> news:%(E-Mail Removed)...
>>
>> Clayton wrote:
>>
>>> Why do most manufactures sell CPU fans with 3 pins for the LGA775 boards
>>> when they all come with 4 pin headers?
>>>
>>> I guess the 4th pin on the motherboard header is for fan control
>>>
>>> Trying to find a decent quiet copper based heatsink/fan with copper
>>> pipes but all have 3 pins and my motherboard has 4 pin header.
>>>
>>>
>>
>> What cheap heatsink/fans are you getting? We have gotten HSF's that
>> are designed, made and sold specifically for LGA775 installations and
>> all of our's have 4-pin CPU fans attached to the heatsink.
>
>

I might be wrong but to my knowledge, any fan indicated as beeing PWM (or
Pulse Width Modulation) compatible (as is the case with the Zalman CNPS9700
NT and other similar models) is probably a 4 pin fan.

--
Sylvain Lafontaine, ing.
MVP - Technologies Virtual-PC
E-mail: sylvain aei ca (fill the blanks, no spam please)


"Paul" <(E-Mail Removed)> wrote in message news:f4040g$k0k$(E-Mail Removed)...
> Clayton wrote:
>> I want to replace the stock Intel HSF with something quiet, has copper
>> heat pipes and fan with 4 pin, what is the best? the Intel one supplied
>> with the CPU is far to noisy and is only aluminium, I hear copper is
>> better for the heat than aluminium is
>
> The fluid in the heat pipes is hundreds of times more effective at moving
> heat, than just metal. The heatpipe(s) should be as close as possible to
> the
> top of the chip package, so they can directly carry the heat from there,
> into the fins. Heatpipes are a means, to make distant fins as
> effective as if they were right on top of the lid. Normally, the
> spread of heat in a solid chunk of metal, reduces the effectiveness
> of fins that are a distance from the heat source. With heatpipes at
> work, an aluminum fin can be almost as good as a copper one, especially
> if the fin is not that tall to begin with. (A tall fin would rely on
> the conduction properties of the fin moreso than a less-tall fin.)
>
> The only downside of heat pipes, is they can fail. For example, there is a
> tiny quantity of fluid inside the heat pipe, and if that leaves the pipe
> for any reason, the pipe is then just a piece of metal. Which is why
> it is good if the cooler design uses more than one pipe - if one pipe
> fails, you still get some cooling effect from the remaining pipes.
>
> This one has a four pin fan on it, at least as depicted in the
> installation manual. There may be others with four pin fans.
>
> http://www.zalman.co.kr/eng/product/...x=231&code=009
>
> The diameter of the cooler is such, that it can bump into the
> power supply, if it is turned a certain way. The compatibility
> page demonstrates the kind of gap that should exist, between the
> bottom surface of the power supply, and the upper edge of the
> motherboard. Since your system is already assembled, it should be
> pretty easy to check the clearance between the power supply
> bottom surface, and the edge of the motherboard. (In using this
> link, my assumption is the 9500AT and the 9700NT have the same
> dimensions. Actually, when I look at the 9500 AT installation
> manual, it has a four pin connector on the fan as well.)
>
> (9500 AT page - where I got the second link)
> http://www.zalman.co.kr/eng/product/...x=193&code=009
>
> (9500 compatibility page)
> http://www.zalman.co.kr/product/cool...D_775_eng.html
>
> Paul
>
>>
>>
>> "GHalleck" <(E-Mail Removed)> wrote in message
>> news:%(E-Mail Removed)...
>>> Clayton wrote:
>>>
>>>> Why do most manufactures sell CPU fans with 3 pins for the LGA775
>>>> boards when they all come with 4 pin headers?
>>>>
>>>> I guess the 4th pin on the motherboard header is for fan control
>>>>
>>>> Trying to find a decent quiet copper based heatsink/fan with copper
>>>> pipes but all have 3 pins and my motherboard has 4 pin header.
>>>>
>>>>
>>> What cheap heatsink/fans are you getting? We have gotten HSF's that
>>> are designed, made and sold specifically for LGA775 installations and
>>> all of our's have 4-pin CPU fans attached to the heatsink.
>>