processor fan

[Pixel \#~]

Hi,

I want to change the fan on a processor. It rather noisy (probably due
to some abuse it suffered), and I had another one lying around.
But I am not sure whether they are exchangeable.

The one on the processor (urr, Pentium-MMX 233 MHz) has written on it:
DC12V - 0.10A
The other one I have has written on it: DC 12V - 0.9W

I understand the DC12V bit, but I am sort of at a loss at the
0.10A/0.9W....

Can anyone help me out?

 

[kony]

Hi,

I want to change the fan on a processor. It rather noisy (probably due
to some abuse it suffered),

If it has a sleeve bearing, try lubing it - a drop or two of
heavyweight oil in the bearing.

and I had another one lying around.
But I am not sure whether they are exchangeable.

The one on the processor (urr, Pentium-MMX 233 MHz) has written on it:
DC12V - 0.10A
The other one I have has written on it: DC 12V - 0.9W

I understand the DC12V bit, but I am sort of at a loss at the
0.10A/0.9W....

Can anyone help me out?

V * A = W

12V * .10A = 1.2W

The original fan used slightly more power and all things
being equal it would tend to be slightly higher RPM.

If the fan had the same efficiency, similar propellar design
and thickness, it would move slightly less RPM. It would be
very close though.

One must be cautious about substituting a significantly
slower fan, particularly on a high heat CPU paired with a
marginal heatsink. That is not the situation you're in,
Pentium 1 MMX was not very hot and any fan working properly
on a typical heatsink should be sufficient. You might even
find that the fan could be undervolted to 7V for much
quieter operation and longevity, assuming at least mild
chassis airflow.

Just keep in mind that if the other fan isn't so new either,
it too might benefit from being lubed.

 

[Pixel \#~]

Earlier kony muttered:

If it has a sleeve bearing, try lubing it - a drop or two of
heavyweight oil in the bearing.


V * A = W

12V * .10A = 1.2W

The original fan used slightly more power and all things
being equal it would tend to be slightly higher RPM.

If the fan had the same efficiency, similar propellar design
and thickness, it would move slightly less RPM. It would be
very close though.

One must be cautious about substituting a significantly
slower fan, particularly on a high heat CPU paired with a
marginal heatsink. That is not the situation you're in,
Pentium 1 MMX was not very hot and any fan working properly
on a typical heatsink should be sufficient. You might even
find that the fan could be undervolted to 7V for much
quieter operation and longevity, assuming at least mild
chassis airflow.

Just keep in mind that if the other fan isn't so new either,
it too might benefit from being lubed.

Okay!
Thanks for your help!