The Dell Fan started to get loud and I replaced with a new one (Dell). The fan is attached to a plastic duct that comes down over the heat sink/CPU. It appears the fan does not draw in and blow down over the CPU but sucks air from around it and discharges it out the back. Is that the correct way to install that fan or did I install it backward?. I'm running a temperature of about 35C.
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check electrical connection wires make sure the plug is dust free and secure you might have to trace it back through the loom make sure its getting power at all connection points orit might faulty and need replacing hope this helps
Stock fans tend to be very loud. If this is a laptop your probably SOL on finding a compatible replacement. If this is a desktop then just buy the same dimensions or just by the fan/heat sink combo's of the same size. From looking up the fan in question I'd say this is a laptop and there isn't much you can do about it
If the fan is clanking/clicking it needs to be replaced, a whine is an indication that the fan will be failing soon and will need to be replaced.
In general if the fans are spinning really fast it means that the system is getting hot and needs cooling. make sure to clean out your system regularly. http://www.pctechbytes.com/DIY/maintenance.htm
You may need to get another fan or two to install in the system to increase air flow, or move the system to a better ventilated area.
depends on the noise. Rattling: Ensure that all cables are out of the way and not touching the blades. Loud screaching noise: replace the fan immediately. now when you say mother board fan is it inbuilt?
All computer fans have a general design. The name in front of "fan" really refers to the designation. You'll see case fan, processor fan, CPU fan, cooling fan, etc. In the case of CPU/Processor fan, some are sold with heatsinks (the metal block sitting on top of your CPU).
The first thing you want to do is make sure the fan is clean. Chances are dust buildup is causing the excess noise.
If that's not the case and you're looking to replace the fan, then you first need to find out the size of the fan. General sizes(diameter X width in mm) are listed on this page:
Generally, you're looking for something that will match the size of what you're replacing & push enough air at a reasonable noise level to cool the heatsink/CPU. You want to stay in the area of 30dBA max for noise. You also want to see if it has a 3-pin or 4-pin connection.
For example, if you have an 80mm fan, I would suggest something like this:
It's pretty quiet with good airflow. Also, it has a 3-pin connection, but includes an adapter for a 4-pin connection.