Water Cooled System

I am looking at An Intel D875PBZ board with a 3.0ghz CPU. I am interested in
using a water cooled system such as provided by Koolance (I am trying to
reduce dust infiltration in to case, existing system with two rear fans and
two front fans load up dust in matter of two- three months, also interested
in noise reduction and provide cooling for any future speed increases). I
was wondering with the water cooled CPU what happens now to the Northbridge
and Voltage regulator sections without the ancillary air flow provided by
the CPU fan? Do you think I could get away with the air flow created by the
cooling fans on top of the unit and the fan in the power supply, or should I
get a case fan for the back pushing air in (or front pushing air in)? I
would like to mount a chipset cooler on the Northbridge but Intel secures
the heatsink with four soldered studs, this leaves no where to secure the
cooler. Any suggestions would be appreciated.

Well, don't worry about water-cooling with an Intel motherboard because you
won't be able to overclock.

Phil Weldon,

I am looking at An Intel D875PBZ board with a 3.0ghz CPU. I am interested
in
using a water cooled system such as provided by Koolance (I am trying to
reduce dust infiltration in to case, existing system with two rear fans
and
two front fans load up dust in matter of two- three months, also
interested
in noise reduction and provide cooling for any future speed increases). I
was wondering with the water cooled CPU what happens now to the
Northbridge
and Voltage regulator sections without the ancillary air flow provided by
the CPU fan? Do you think I could get away with the air flow created by
the
cooling fans on top of the unit and the fan in the power supply, or should
I
get a case fan for the back pushing air in (or front pushing air in)? I
would like to mount a chipset cooler on the Northbridge but Intel secures
the heatsink with four soldered studs, this leaves no where to secure the
cooler. Any suggestions would be appreciated.

"Phil Weldon" wrote in message
hlink.net...
Well, don't worry about water-cooling with an Intel motherboard because
you
won't be able to overclock.

Phil Weldon,

I am looking at An Intel D875PBZ board with a 3.0ghz CPU. I am
interested
in
using a water cooled system such as provided by Koolance (I am trying to
reduce dust infiltration in to case, existing system with two rear fans
and
two front fans load up dust in matter of two- three months, also
interested
in noise reduction and provide cooling for any future speed increases).
I
was wondering with the water cooled CPU what happens now to the
Northbridge
and Voltage regulator sections without the ancillary air flow provided
by
the CPU fan? Do you think I could get away with the air flow created by
the
cooling fans on top of the unit and the fan in the power supply, or
should
I
get a case fan for the back pushing air in (or front pushing air in)? I
would like to mount a chipset cooler on the Northbridge but Intel
secures
the heatsink with four soldered studs, this leaves no where to secure
the
cooler. Any suggestions would be appreciated.



To address your other issues with watercooling;

First the air flow issue, the CPU HSF (hopefully)
provides little or no air flow to the Northbridge.
You want "fresh"cool air, flowing thru your case,
to be applied to those parts needing cooling.

One of the benifits of watercooling is that it can
remove the heat load, (from that air flow) that
would have otherwise been added by the CPU
and whatever else is watercooled. Normally the
PS fans can provide enough flow but adding a
low or controlled speed exaust fan near the top
of your case can dramaticaly improve air flow.

The little $30US Koolance Chipset waterblock
is easy to epoxy on. ( I have one of those on the
Southbridge of my A7N8X, works great.)
You can get some "Artic Alumina Thermal Adhesive"
for not too much.

Luck;
Ken

Ken,
Thanks for useful input. I was wondering how much the CPU fan was really
doing. The way the boards are configured seems to lend the Northbridge and
voltage regulators to air flow from the CPU fan. I will plan on getting one
fan for mounting in rear of case in upper position, this should draw air
through from the bottom up across board and finally out.
Thanks again
"Ken Maltby" wrote in message
s.com...

"Phil Weldon" wrote in message
hlink.net...
Well, don't worry about water-cooling with an Intel motherboard because
you
won't be able to overclock.

Phil Weldon,

I am looking at An Intel D875PBZ board with a 3.0ghz CPU. I am
interested
in
using a water cooled system such as provided by Koolance (I am trying
to
reduce dust infiltration in to case, existing system with two rear
fans
and
two front fans load up dust in matter of two- three months, also
interested
in noise reduction and provide cooling for any future speed
increases).
I
was wondering with the water cooled CPU what happens now to the
Northbridge
and Voltage regulator sections without the ancillary air flow provided
by
the CPU fan? Do you think I could get away with the air flow created
by
the
cooling fans on top of the unit and the fan in the power supply, or
should
I
get a case fan for the back pushing air in (or front pushing air in)?
I
would like to mount a chipset cooler on the Northbridge but Intel
secures
the heatsink with four soldered studs, this leaves no where to secure
the
cooler. Any suggestions would be appreciated.



To address your other issues with watercooling;

First the air flow issue, the CPU HSF (hopefully)
provides little or no air flow to the Northbridge.
You want "fresh"cool air, flowing thru your case,
to be applied to those parts needing cooling.

One of the benifits of watercooling is that it can
remove the heat load, (from that air flow) that
would have otherwise been added by the CPU
and whatever else is watercooled. Normally the
PS fans can provide enough flow but adding a
low or controlled speed exaust fan near the top
of your case can dramaticaly improve air flow.

The little $30US Koolance Chipset waterblock
is easy to epoxy on. ( I have one of those on the
Southbridge of my A7N8X, works great.)
You can get some "Artic Alumina Thermal Adhesive"
for not too much.

Luck;
Ken

i dont know much about water cooling but i strongly suggest u drop the intel
mobo and get a asus pc800e deluxe or an abit ic7g. the gigabyte boards are
also decent but they too suck for oc-ing.

good luck

"Paul" wrote in message
et...
Ken,
Thanks for useful input. I was wondering how much the CPU fan was really
doing. The way the boards are configured seems to lend the Northbridge and
voltage regulators to air flow from the CPU fan. I will plan on getting
one
fan for mounting in rear of case in upper position, this should draw air
through from the bottom up across board and finally out.
Thanks again
"Ken Maltby" wrote in message
s.com...

"Phil Weldon" wrote in message
hlink.net...
Well, don't worry about water-cooling with an Intel motherboard
because
you
won't be able to overclock.

Phil Weldon,

I am looking at An Intel D875PBZ board with a 3.0ghz CPU. I am
interested
in
using a water cooled system such as provided by Koolance (I am
trying
to
reduce dust infiltration in to case, existing system with two rear
fans
and
two front fans load up dust in matter of two- three months, also
interested
in noise reduction and provide cooling for any future speed
increases).
I
was wondering with the water cooled CPU what happens now to the
Northbridge
and Voltage regulator sections without the ancillary air flow
provided
by
the CPU fan? Do you think I could get away with the air flow created
by
the
cooling fans on top of the unit and the fan in the power supply, or
should
I
get a case fan for the back pushing air in (or front pushing air
in)?
I
would like to mount a chipset cooler on the Northbridge but Intel
secures
the heatsink with four soldered studs, this leaves no where to
secure
the
cooler. Any suggestions would be appreciated.



To address your other issues with watercooling;

First the air flow issue, the CPU HSF (hopefully)
provides little or no air flow to the Northbridge.
You want "fresh"cool air, flowing thru your case,
to be applied to those parts needing cooling.

One of the benifits of watercooling is that it can
remove the heat load, (from that air flow) that
would have otherwise been added by the CPU
and whatever else is watercooled. Normally the
PS fans can provide enough flow but adding a
low or controlled speed exaust fan near the top
of your case can dramaticaly improve air flow.

The little $30US Koolance Chipset waterblock
is easy to epoxy on. ( I have one of those on the
Southbridge of my A7N8X, works great.)
You can get some "Artic Alumina Thermal Adhesive"
for not too much.

Luck;
Ken

I carefully monitored chip and case temperatures before and after installing
a watercooled CPU (3.06GHz Pentium) in ABIT mobo. The CPU temperature was
reduced and maintained at a very acceptable temp. However, the nearby
Northbridge temp rose by some 25 deg C. This was alarming and was caused by
the removal of the CPU fan the'downdraught' of which circulated air round
the Northbridge heatsink.
I added a small fan to stir the otherwise-stale air at the centre of my mobo
and all is well.
Moral of the story: check teh Northbridge temperature. Your mobo design
might rely upon some air circulation from the CPU fan. It wouldn't be very
smart to have a nice cool CPU while the Northbridge cooks away merrily
resulting in a much reduced life of that (fixed) component!

Good luck
Tony

"Paul" wrote in message
et...
Ken,
Thanks for useful input. I was wondering how much the CPU fan was really
doing. The way the boards are configured seems to lend the Northbridge and
voltage regulators to air flow from the CPU fan. I will plan on getting
one
fan for mounting in rear of case in upper position, this should draw air
through from the bottom up across board and finally out.
Thanks again
"Ken Maltby" wrote in message
s.com...

"Phil Weldon" wrote in message
hlink.net...
Well, don't worry about water-cooling with an Intel motherboard
because
you
won't be able to overclock.

Phil Weldon,

I am looking at An Intel D875PBZ board with a 3.0ghz CPU. I am
interested
in
using a water cooled system such as provided by Koolance (I am
trying
to
reduce dust infiltration in to case, existing system with two rear
fans
and
two front fans load up dust in matter of two- three months, also
interested
in noise reduction and provide cooling for any future speed
increases).
I
was wondering with the water cooled CPU what happens now to the
Northbridge
and Voltage regulator sections without the ancillary air flow
provided
by
the CPU fan? Do you think I could get away with the air flow created
by
the
cooling fans on top of the unit and the fan in the power supply, or
should
I
get a case fan for the back pushing air in (or front pushing air
in)?
I
would like to mount a chipset cooler on the Northbridge but Intel
secures
the heatsink with four soldered studs, this leaves no where to
secure
the
cooler. Any suggestions would be appreciated.



To address your other issues with watercooling;

First the air flow issue, the CPU HSF (hopefully)
provides little or no air flow to the Northbridge.
You want "fresh"cool air, flowing thru your case,
to be applied to those parts needing cooling.

One of the benifits of watercooling is that it can
remove the heat load, (from that air flow) that
would have otherwise been added by the CPU
and whatever else is watercooled. Normally the
PS fans can provide enough flow but adding a
low or controlled speed exaust fan near the top
of your case can dramaticaly improve air flow.

The little $30US Koolance Chipset waterblock
is easy to epoxy on. ( I have one of those on the
Southbridge of my A7N8X, works great.)
You can get some "Artic Alumina Thermal Adhesive"
for not too much.

Luck;
Ken

"Tony Scott" wrote in message
...
I carefully monitored chip and case temperatures before and after
installing
a watercooled CPU (3.06GHz Pentium) in ABIT mobo. The CPU temperature was
reduced and maintained at a very acceptable temp. However, the nearby
Northbridge temp rose by some 25 deg C. This was alarming and was caused
by
the removal of the CPU fan the'downdraught' of which circulated air round
the Northbridge heatsink.
I added a small fan to stir the otherwise-stale air at the centre of my
mobo
and all is well.
Moral of the story: check teh Northbridge temperature. Your mobo design
might rely upon some air circulation from the CPU fan. It wouldn't be very
smart to have a nice cool CPU while the Northbridge cooks away merrily
resulting in a much reduced life of that (fixed) component!

Good luck
Tony


If you had no air flowing over your Northbridge except the exaust
from your CPU heatsink fan then that would be a problem in itself.
Perhaps along with adding the CPU waterblock you also blocked
the normal flow of air that should be there for a number of ICs
mounted on the MB, as well as the Memory and Northbrige.

and 25C...please... give me a break

Of course you should check the Northbridge temp and any other
componets that could be effected. But if there is a proper air flow
thru the case there should be no major "Stale Air", especially around
the Northbridge and power rectifers.

I have never seen a manufacturer's data sheet that mentioned
such a design feature. If such was out there then the endless
debate over which way to mount the fan on a heat sink would
have brought it out.

I don't dought your experience, just your view of the cause.

Ken

P.S. Adding an old 386/486 HSF to these newer tall fin
Northbridge Heatsinks is an easy and effective addition,
there is even the three pin CPU power socket avail. But
that won't be to dispell "stale air".