fan

[Darklight]

I have a AMD 2800+ sampron socket A on a gigabyte GA-7VT600 (-L) motherboard
with a coolmaster jet CPU cooling fan the fan is to load so could some one
recommend a quieter fan thanks for your help

 

[kony]

I have a AMD 2800+ sampron socket A on a gigabyte GA-7VT600 (-L) motherboard
with a coolmaster jet CPU cooling fan the fan is to load so could some one
recommend a quieter fan thanks for your help

.... but why would you buy a jet if you don't want it to
sound like, umm, a jet?

Take the fan off and measure the dimensions of the mounting
holes, I mean the distances between them.

Is it the jet 7 or some other number?

It looks a bit like a standard 80mm (maybe only 70mm, meaure
it) diameter fan would fit. Thus, you'd get one that suits
your system, which if it had reasonable chassis airflow and
that CPU, might need be about 2200 RPM. Higher RPM if the
system has minor cooling problems... if it has major cooling
problems then fix the chassis airflow first as it's bound to
be bad on other parts, not just CPU temps.

So looking at a 25mm thick fan (because it's necessary for
above RPM, using a thinner fan would mean you need more RPM,
a lower airflow:noise ratio), something like a Panaflo L1A
or perhaps if you want dual-ball-bearing, an NMB
3110KL-04W-B10. I'm not entirely sure of the NMB part #,
but the current rating would be about 0.10 to 0.12 amp.

If you had to drop down to a 70mm diameter, you might need
more RPM, maybe 2500. 70mm fans are less common though, I
don't know what's best at the moment... just look at the
major brands of _fan_ manufacturers' parts, not
pc-parts-relabelers.

If you wanted to replace the entire heatsink for some reason
(which I don't think would be necessary and you'd get either
a lower quality fan or have to pay a lot more, plus most
'sinks with very good fans use higher RPM, louder fans),
just read up on some skt A heatsink reviews as we don't know
the budget. IOW, I doubt you want to pay a premium today
for a high-end heatsink for a 2800 Sempron, and either way
it may still be unnecessary if the original 'sink can take a
normal 80x25mm fan.

 

[kony]

I have a AMD 2800+ sampron socket A on a gigabyte GA-7VT600 (-L) motherboard
with a coolmaster jet CPU cooling fan the fan is to load so could some one
recommend a quieter fan thanks for your help

Of course with a thicker fan you may need longer screws
too... check your local hardware store, mine has packs of a
few wood or sheet-metal screws for $1. That's if the metal
on the 'sink is untapped, of course a tapped mounting would
best use the same tap screw. 4-40 or 6-32 seem fairly
common tapped sizes.

 

[Darklight]

... but why would you buy a jet if you don't want it to
sound like, umm, a jet?

Take the fan off and measure the dimensions of the mounting
holes, I mean the distances between them.

Is it the jet 7 or some other number?

It looks a bit like a standard 80mm (maybe only 70mm, meaure
it) diameter fan would fit. Thus, you'd get one that suits
your system, which if it had reasonable chassis airflow and
that CPU, might need be about 2200 RPM. Higher RPM if the
system has minor cooling problems... if it has major cooling
problems then fix the chassis airflow first as it's bound to
be bad on other parts, not just CPU temps.

So looking at a 25mm thick fan (because it's necessary for
above RPM, using a thinner fan would mean you need more RPM,
a lower airflow:noise ratio), something like a Panaflo L1A
or perhaps if you want dual-ball-bearing, an NMB
3110KL-04W-B10. I'm not entirely sure of the NMB part #,
but the current rating would be about 0.10 to 0.12 amp.

If you had to drop down to a 70mm diameter, you might need
more RPM, maybe 2500. 70mm fans are less common though, I
don't know what's best at the moment... just look at the
major brands of _fan_ manufacturers' parts, not
pc-parts-relabelers.

If you wanted to replace the entire heatsink for some reason
(which I don't think would be necessary and you'd get either
a lower quality fan or have to pay a lot more, plus most
'sinks with very good fans use higher RPM, louder fans),
just read up on some skt A heatsink reviews as we don't know
the budget. IOW, I doubt you want to pay a premium today
for a high-end heatsink for a 2800 Sempron, and either way
it may still be unnecessary if the original 'sink can take a
normal 80x25mm fan.

i think i tried that some time ago and did not work cpu temp went strait up
and pc shutdown. Any way if you go hear this is the cpu cooler i have
http://www.cooltechzone.com/reviews/cooling/jet7_1.php

fan runs at 3590 rpm cpu termp 50.6 c under normal load if temp goes up to
60 c i turn fan up to 4500 rpm and that brings it back down but still to
load if i have to by another cpu cooler, so be it but it must be quiet owe
i have a 120 mm exshaut fan on the side.

 

[kony]

i think i tried that some time ago and did not work cpu temp went strait up
and pc shutdown. Any way if you go hear this is the cpu cooler i have
http://www.cooltechzone.com/reviews/cooling/jet7_1.php

The temp should not get that high with a 2200 RPM 80x25 mm
fan on it. Is the bottom of the heatsink rough? Maybe it
needs lapped. Are you using a good quality (like Arctic
Silver or alumina) synthetic thermal compound? The stuff
included with Coolermaster products may not be so good, but
even so if properly applied might only make a minor
difference- unless the bottom of the 'sink were too rough.

fan runs at 3590 rpm cpu termp 50.6 c under normal load if temp goes up to
60 c i turn fan up to 4500 rpm and that brings it back down but still to
load if i have to by another cpu cooler, so be it but it must be quiet owe
i have a 120 mm exshaut fan on the side.

Are you overclocking? A Sempron 2800 is not that hard to
keep cool. I don't own a Jet 7, perhaps the (metal portion
of) sink itself is junk? Does your motherboard reduce fan
speed by the onboard header? When I wrote 2200 RPM, I
meant running it at that speed, of the motherboard is
further reducing the speed, you may need choose a higher
default RPM spec'd fan or not use the motherboard fan header
(or a different header that doesn't have the fan control.

To give you a frame of reference, at the moment I'm typing
on a system with an overclocked Athlon XP @ 2.3GHz. It has
one of the NMB fans mentioned above on an Alpha 'sink, which
was regarded as a pretty good 'sink for it's day but it's
not a high-performance 'sink by modern standards (inferior
to something like a Thermalright SLK-900, for example).

Why is your side fan an exhaust? Why do you have a 120mm
side fan? Regardless, I would wonder if your case has amply
intake area in the bottom front, perhaps this is the cause
of the poor cooling.

The jet fan type is inherantly louder than a typical fan
though, as it needs to run at a higher RPM for the same
result.

If you buy another 'sink you may still need buy a diffeent
fan (than came on it) for lower noise. Thus my prior
suggestion still applies, to get a 80x25mm fan of roughly
2200 RPM or a little higher if the system has the front air
intake problem (though ideally, that kind of issue would be
rectified instead of a work-around).

I don't know who has the best value in skt A 'sinks at the
moment. I used to keep track of that but skt A is aging now
and I need no skt A 'sinks so ...

Typically the best deals come from Thermalright or Zalman,
ie- they may cost a bit more but instead of gimmisks you get
a decent 'sink. Other brands like Arctic Cooling make junk
then hype it a lot. Your present 'sink with a good quality
80x25mm fan would be better than Arctic Cooling products.

I still think it's unusual that you're getting the temps you
are with that 'sink if you had a 80x25mm fan on it
previously. A Sempron 2800 is only 2.0GHz, IIRC, which is
still a fairly manageable heat density.