Question about Dell (6F858) Cooling Fan

1 Answer

Fan Noise on Dell Dimension 8100

I have a Dell Dimension 8100, was new in 2002. I bought it used. It's in good shape, but the fan is making a lot of noise, so I probably need to replace it.  Question: It has only ONE fan doesn't it?  And it is variously referred to as "Cooling Fan" and "Processor Fan"?  What are the specs for replacing the processor fan in my computer?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Contributor
  • 24 Answers
Re: Fan Noise on Dell Dimension 8100

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.


Posted on Oct 27, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Installed a dell 3000 dimension cooling fan and its not working

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

Nov 12, 2011 | Dell (6F858) Cooling Fan

1 Answer

I have this fan on my Dell Dimension 8400. I cannot stand the noise any more. Is there a direct replacement that is quieter? Bill

Check any Online P.C. shop and check the Fan in question details then look for 1 to match, can recommend a good online store if your from the U.K. let me know here...

Aug 21, 2010 | Dell (Fan Only) M/N AFC0912DE, DC12V,...

2 Answers

I have a dell dimension E510. When the computer boots up it runs fine for about 5 minutes, then the fan begins to speed up. It will speed up a little, then drop off a little surge more and then the end...

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.
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.

Dec 31, 2009 | Dell (6F858) Cooling Fan

2 Answers

Loud motherboard fan on Dell Dimension 9100

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?

Jul 03, 2009 | Computer System Cooling

1 Answer

Dell Inspiron 1525 Dual Core fan making way too much noise. Need to repair ASAP. This laptop use to be my old job's service computer before I quit and because I had it all set up with dual system boot and...

The fan sould be repairable. I know Best Buy isn't going out of business anytime soon (unless they are shutting down down a store in your area) but Circuit City is. You can contact Dell as well using the 800 number and give them the service tag number on the computer. That way you can see if its still under warranty.

Jan 04, 2009 | Dell (6F858) Cooling Fan

1 Answer


Your system will run fine until the processor starts overheating... why not just replace the fan?

Oct 26, 2008 | Dell Mini Fan. Dimension (W x H x D) in....

1 Answer

Cooling fan Dell Dimension 3000

That is the correct way. It is a newer design that keeps the hot air from the CPU heatsink out of the case. 35C is a good temp.

Sep 23, 2008 | Dell (6F858) Cooling Fan

1 Answer

CPU Cooling Fan

Here's a link for one of the cheapest I found. You can also check Ebay, you might get a better deal.

Jun 25, 2008 | Foxconn Computer System Cooling

1 Answer

Noisy fan old older computer

Buy a new one here for $10

May 10, 2008 | Dell Mini Fan. Dimension (W x H x D) in....

3 Answers

Noisy fan

We have a Dell Dimension 4700C too. We had it on a 3-year warranty and the only problem with it was that from that to time it would become abnormally noisy, too noisy in fact. Dell sent a repair guy twice, and they changed the heatsink/fan assembly unit both times, and the third time we did it ourselves (it's not that hard to do), but here's the thing, we noticed how DUSTY it was when it came out, we wondered how it even worked with all that dust. So, now our warranty has expired, and guess what, the computer started making that terrible racket again, so this time, we opened it, armed with the vacuum cleaner and a can of compressed air, gave the whole inside of the computer a good once over, removed the heatsink/fan assembly and cleaned it thorougly (you can't do this unless it is out), and it worked like a charm, can't even tell the computer is running. Hope this helps.

Nov 09, 2007 | Dell Mini Fan. Dimension (W x H x D) in....

Not finding what you are looking for?
Dell (6F858) Cooling Fan Logo

Related Topics:

2,048 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dell Computer System Cooling Experts


Level 3 Expert

2072 Answers

Brian Sullivan
Brian Sullivan

Level 3 Expert

27725 Answers

Matthew Spark
Matthew Spark

Level 3 Expert

1042 Answers

Are you a Dell Computer System Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides