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Inspiron 5680, adding a front fan?

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Inspecting my new 5680 (the version with the DVD drive), I see a space in the front panel that I think is intended for a fan. I’m going to be filling the drive bays by adding a Samsung 860 EVO (SSD) as a boot drive and an older 1.5TB hard drive for backups, and I’m concerned about heat.

Anyone have any info on adding a fan, if necessary, such as size, issues I may encounter controlling it, etc.?

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2 Iron

Re: Adding a front fan to Inspiron 5680?

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As suggested, the spot on the front of the 5680 case is designed to accept a 92mm fan. I bought a Noctua NF-A9 PWM. Successfully installing it wasn’t as simple as I’d hoped (it had to be installed entirely from inside the case), but I managed:

  1. Removed the two screws holding the black graphics card support cage in place and moved it out of the way.
  2. Inserted the four rubber pegs into the large holes provided in the case and then slid them up and out (top 2) or down and out (bottom 2) into the smaller lock holes meant for them.
  3. Threaded all four pegs into the matching holes on the fan and then pulled each peg hard to lock it in place—except the bottom left one. There’s no way to reach that peg from within the case.
  4. Plugged the fan’s cable into the nearby 4-pin PWM header on the motherboard.

Notes

  • Even without the last peg secured, the fan seems solid enough and doesn’t wobble.
  • Although I also removed the front cover of the 5680, doing so didn’t give access to the fan holes. I also removed the 7 or so screws that secured the additional cover beneath it. But I didn’t see a way to remove it, so I just put the screws back in.
  • Connecting the fan to the PWM does not cause a startup error. Like the two original fans (back and CPU), its speed is correctly controlled by the motherboard.

 

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9 Replies
5 Iridium

Re: Adding a front fan to Inspiron 5680?

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Looks like 92 mm would work. Try the following link.

https://www.dell.com/community/Inspiron-Desktops/Inspiron-5680-i7-8700-needs-a-better-cooler/td-p/61...




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2 Iron

Re: Adding a front fan to Inspiron 5680?

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92mm looks right. Thanks!

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2 Iron

Re: Adding a front fan to Inspiron 5680?

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As suggested, the spot on the front of the 5680 case is designed to accept a 92mm fan. I bought a Noctua NF-A9 PWM. Successfully installing it wasn’t as simple as I’d hoped (it had to be installed entirely from inside the case), but I managed:

  1. Removed the two screws holding the black graphics card support cage in place and moved it out of the way.
  2. Inserted the four rubber pegs into the large holes provided in the case and then slid them up and out (top 2) or down and out (bottom 2) into the smaller lock holes meant for them.
  3. Threaded all four pegs into the matching holes on the fan and then pulled each peg hard to lock it in place—except the bottom left one. There’s no way to reach that peg from within the case.
  4. Plugged the fan’s cable into the nearby 4-pin PWM header on the motherboard.

Notes

  • Even without the last peg secured, the fan seems solid enough and doesn’t wobble.
  • Although I also removed the front cover of the 5680, doing so didn’t give access to the fan holes. I also removed the 7 or so screws that secured the additional cover beneath it. But I didn’t see a way to remove it, so I just put the screws back in.
  • Connecting the fan to the PWM does not cause a startup error. Like the two original fans (back and CPU), its speed is correctly controlled by the motherboard.

 

View solution in original post

2 Bronze

Re: Adding a front fan to Inspiron 5680?

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Zapt does your Noctua fan ever get to its intended speed? I have the inspiron 5676 (amd ryzen 7 2700x system) and I did the Noctua NF-B9 redux 1600 rpm PWM fan. I can't seem to ever get the fan to go above 700 RPM.. I dont understand why.
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2 Bronze

Re: Adding a front fan to Inspiron 5680?

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I am having the same issue, did you ever solve it?

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2 Bronze

Re: Adding a front fan to Inspiron 5680?

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Hi what size rubber pegs did you get can you post a link ?

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8 Xenon

Re: Adding a front fan to Inspiron 5680?

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https://linustechtips.com/main/topic/863404-dell-inspiron-gaming-5676-liquid-cooling/

This model can be INTEL or AMD

5680

LGA1151 Socket  Intel Core i7 processor Like the BX80684I79700K

https://www.walmart.com/ip/Dell-NVIDIA-Storage-Memory-HDD-GTX-Intel-GeForce-Inspiron-16GB-Core-1TB-1...

or

5675

AMD Ryzen  AM4 Processor

https://www.amazon.com/Cooler-Master-RR-212E-20PK-R2-Direct-Contact/dp/B005O65JXI/

Liquid coolers tend to start at $90 and go up from there.

https://www.walmart.com/ip/Dell-Inspiron-5675-Desktop-AMD-Ryzen-3-8GB-Memory-1TB-HD-AMD-Radeon-RX-56...

 

If you install standard fan and it complains then the fans use non standard wiring.

Otherwise its standard.

Dell MB
Pin Number

Function

Dell wire color


Pin #

INTEL Fan wire color

Description

1

Sens (TACH)

White/Yellow

3

Green

Sens (TACH)

2

+12v

Red

2

Yellow

+12v

3

Gnd

Black

1

Black

Gnd

4

PWM

Blue

4

Blue

PWM

5

Key

unused

 

 

  

 

Dell May not use standard wiring or Pinouts on their fan headers.

This can lead to self-destruction for a dell fan on standard motherboard or the other way round.

For 3 wire they reverse 12v and tach. 

Black Red White not

Black White Red

 

https://www.amazon.com/Dedicated-Adapter-Conversion-Cable-Dell/dp/B07F7CTMVZ

 https://www.walmart.com/ip/48729225

 

This is the CPU FAN for Example.

https://www.amazon.com/Dell-Optiplex-Processor-Aluminum-Heatsink/dp/B079YVX6HC

Dell MB
Pin Number

Function

Dell wire color


Pin #

INTEL Fan wire color

Description

1

Sens (TACH)

White/Yellow

3

Green

Sens (TACH)

2

+12v

Red

2

Yellow

+12v

3

Gnd

Black

1

Black

Gnd

4

PWM

Blue

4

Blue

PWM

5

Key

unused

 

 

  

DELL FAN WIRING

 

DELL FAN WIRESDELL FAN WIRES

 


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2 Iron

Re: Inspiron 5680, adding a front fan?

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The Noctua fan comes with rubber pegs/posts to install it. I assume that most fans come with some sort of mounting pegs, given that preassembled computers (like our Dells) don’t generally include them.

2 Bronze

Re: Inspiron 5680, adding a front fan?

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Correction, same issue with low RPM front fan, Noctua, about 800-ish rpm's. But I'm running a 5675 (very similar).

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