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How to connect all the case fans? (AKA the topic where I look really stupid by asking stupid questions)

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December 27, 2013 7:34:03 PM

I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.

Best solution

a b B Homebuilt system
December 27, 2013 7:48:13 PM

5to82allday said:
I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.


Neatest solution is to use molex to fan adapter cables, because you can power three fans off the one molex connector.
Bitfenix makes some nice cables of this type and they even offer these in 12V, 7V or 5V varieties connecting to different pins of the molex connector. Use the 12V for full speed fans or 7V for quiet builds.
http://www.bitfenix.com/global/en/products/premium-modd...

You can use fan splitters off the motherboard fan headers, but I'm wary of drawing too much current through these headers.
http://www.silverstonetek.com/product.php?pid=485&area=...

You also need to carefully consider which fans should blow out (exhaust) and which should blow inwards (intake).

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December 27, 2013 9:21:38 PM

VincentP said:
5to82allday said:
I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.


Neatest solution is to use molex to fan adapter cables, because you can power three fans off the one molex connector.
Bitfenix makes some nice cables of this type and they even offer these in 12V, 7V or 5V varieties connecting to different pins of the molex connector. Use the 12V for full speed fans or 7V for quiet builds.
http://www.bitfenix.com/global/en/products/premium-modd...

You can use fan splitters off the motherboard fan headers, but I'm wary of drawing too much current through these headers.
http://www.silverstonetek.com/product.php?pid=485&area=...

You also need to carefully consider which fans should blow out (exhaust) and which should blow inwards (intake).


Thanks for the reply. Is it the "Molex to 3 fan adapter"? I can't seem to find the cables.
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a b B Homebuilt system
December 27, 2013 10:12:17 PM

5to82allday said:
VincentP said:
5to82allday said:
I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.


Neatest solution is to use molex to fan adapter cables, because you can power three fans off the one molex connector.
Bitfenix makes some nice cables of this type and they even offer these in 12V, 7V or 5V varieties connecting to different pins of the molex connector. Use the 12V for full speed fans or 7V for quiet builds.
http://www.bitfenix.com/global/en/products/premium-modd...

You can use fan splitters off the motherboard fan headers, but I'm wary of drawing too much current through these headers.
http://www.silverstonetek.com/product.php?pid=485&area=...

You also need to carefully consider which fans should blow out (exhaust) and which should blow inwards (intake).


Thanks for the reply. Is it the "Molex to 3 fan adapter"? I can't seem to find the cables.


Yes. "Molex to 3 fan adapter 12V" is a 20cm cable.
They are available in a range of colours too if appearance is a concern.
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December 28, 2013 11:00:34 AM

VincentP said:
5to82allday said:
VincentP said:
5to82allday said:
I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.


Neatest solution is to use molex to fan adapter cables, because you can power three fans off the one molex connector.
Bitfenix makes some nice cables of this type and they even offer these in 12V, 7V or 5V varieties connecting to different pins of the molex connector. Use the 12V for full speed fans or 7V for quiet builds.
http://www.bitfenix.com/global/en/products/premium-modd...

You can use fan splitters off the motherboard fan headers, but I'm wary of drawing too much current through these headers.
http://www.silverstonetek.com/product.php?pid=485&area=...

You also need to carefully consider which fans should blow out (exhaust) and which should blow inwards (intake).


Thanks for the reply. Is it the "Molex to 3 fan adapter"? I can't seem to find the cables.


Yes. "Molex to 3 fan adapter 12V" is a 20cm cable.
They are available in a range of colours too if appearance is a concern.
Thank you once again for the reply. I just want to make sure I have the right cable, is this it? http://www.amazon.com/Alpha-Omega-148-0027-3-Pin-Adapte...

Sorry for all the annoying questions but I'm really new to this.
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a b B Homebuilt system
December 28, 2013 3:18:17 PM

5to82allday said:
VincentP said:
5to82allday said:
VincentP said:
5to82allday said:
I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.


Neatest solution is to use molex to fan adapter cables, because you can power three fans off the one molex connector.
Bitfenix makes some nice cables of this type and they even offer these in 12V, 7V or 5V varieties connecting to different pins of the molex connector. Use the 12V for full speed fans or 7V for quiet builds.
http://www.bitfenix.com/global/en/products/premium-modd...

You can use fan splitters off the motherboard fan headers, but I'm wary of drawing too much current through these headers.
http://www.silverstonetek.com/product.php?pid=485&area=...

You also need to carefully consider which fans should blow out (exhaust) and which should blow inwards (intake).


Thanks for the reply. Is it the "Molex to 3 fan adapter"? I can't seem to find the cables.


Yes. "Molex to 3 fan adapter 12V" is a 20cm cable.
They are available in a range of colours too if appearance is a concern.
Thank you once again for the reply. I just want to make sure I have the right cable, is this it? http://www.amazon.com/Alpha-Omega-148-0027-3-Pin-Adapte...

Sorry for all the annoying questions but I'm really new to this.


That cable allows you to power a single fan off a molex connector.
You can piggy back these cables, but it will be messy.
These type of cables are also hard to get the molex connector in, and if you're not careful the pins pop out.
See if you can find a store that sells the Bitfenix cables.
In Australia they are sold by http://www.pccasegear.com/
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December 28, 2013 7:09:51 PM

VincentP said:
5to82allday said:
VincentP said:
5to82allday said:
VincentP said:
5to82allday said:
I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.


Neatest solution is to use molex to fan adapter cables, because you can power three fans off the one molex connector.
Bitfenix makes some nice cables of this type and they even offer these in 12V, 7V or 5V varieties connecting to different pins of the molex connector. Use the 12V for full speed fans or 7V for quiet builds.
http://www.bitfenix.com/global/en/products/premium-modd...

You can use fan splitters off the motherboard fan headers, but I'm wary of drawing too much current through these headers.
http://www.silverstonetek.com/product.php?pid=485&area=...

You also need to carefully consider which fans should blow out (exhaust) and which should blow inwards (intake).


Thanks for the reply. Is it the "Molex to 3 fan adapter"? I can't seem to find the cables.


Yes. "Molex to 3 fan adapter 12V" is a 20cm cable.
They are available in a range of colours too if appearance is a concern.
Thank you once again for the reply. I just want to make sure I have the right cable, is this it? http://www.amazon.com/Alpha-Omega-148-0027-3-Pin-Adapte...

Sorry for all the annoying questions but I'm really new to this.


That cable allows you to power a single fan off a molex connector.
You can piggy back these cables, but it will be messy.
These type of cables are also hard to get the molex connector in, and if you're not careful the pins pop out.
See if you can find a store that sells the Bitfenix cables.
In Australia they are sold by http://www.pccasegear.com/
Think I FINALLY found them on a site I've done business with before. :D 

http://www.outletpc.com/yt9844.html

Ordered 3(2 for 6 fans and 1 as a backup just in case)

Hopefully those are right and thanks again for the help. :) 

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a b B Homebuilt system
December 28, 2013 7:31:41 PM

5to82allday said:
VincentP said:
5to82allday said:
VincentP said:
5to82allday said:
VincentP said:
5to82allday said:
I have the HAF 912, ASRock Fatal1ty Z87 Killer, a 1000W PSU, and a crap load of fans including: 1 fan on the back of the 912, 2 fans on the front, 2 fans on top and 1 fan on the side panel. So far the only fan I have connected is the CPU fan that's connected to my Hyper 212 EVO. I'm just wondering... how do I connect all these case fans? Should I connect them directly to the Motherboard, or does the PSU come with fan connectors? Some of the fans have the little 3 pin connector, while some have the big 4 pin molex(I guess?) connector. I'm trying to keep wiring and clutter at a minimum.

I appreciate any and all help.


Neatest solution is to use molex to fan adapter cables, because you can power three fans off the one molex connector.
Bitfenix makes some nice cables of this type and they even offer these in 12V, 7V or 5V varieties connecting to different pins of the molex connector. Use the 12V for full speed fans or 7V for quiet builds.
http://www.bitfenix.com/global/en/products/premium-modd...

You can use fan splitters off the motherboard fan headers, but I'm wary of drawing too much current through these headers.
http://www.silverstonetek.com/product.php?pid=485&area=...

You also need to carefully consider which fans should blow out (exhaust) and which should blow inwards (intake).


Thanks for the reply. Is it the "Molex to 3 fan adapter"? I can't seem to find the cables.


Yes. "Molex to 3 fan adapter 12V" is a 20cm cable.
They are available in a range of colours too if appearance is a concern.
Thank you once again for the reply. I just want to make sure I have the right cable, is this it? http://www.amazon.com/Alpha-Omega-148-0027-3-Pin-Adapte...

Sorry for all the annoying questions but I'm really new to this.


That cable allows you to power a single fan off a molex connector.
You can piggy back these cables, but it will be messy.
These type of cables are also hard to get the molex connector in, and if you're not careful the pins pop out.
See if you can find a store that sells the Bitfenix cables.
In Australia they are sold by http://www.pccasegear.com/
Think I FINALLY found them on a site I've done business with before. :D 

http://www.outletpc.com/yt9844.html

Ordered 3(2 for 6 fans and 1 as a backup just in case)

Hopefully those are right and thanks again for the help. :) 



That's the one. You'll be happy with these cables. The plugs fit well and the sheathed cables don't tangle or catch.
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