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Old 08-08-2008, 12:06 AM   #1
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Default Molex Fans

So I was looking on newegg for fans with molex power connectors only to find that there weren't any. Is there such a thing as a molex to 3/4-pin power connector? I don't really want to buy a Fan Controller, if I do it will only be for 2 fans, so I'd just buy a PCI one, which I'll look into later.
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Old 08-08-2008, 12:18 AM   #2
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Default Re: Molex Fans

Most all case fans have molex connectors. What are you looking for specifically?
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Old 08-08-2008, 12:20 AM   #3
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Default Re: Molex Fans

I'm pretty sure almost all fans come with adapters for molex power. Even these super cheap ones I ordered a while back do:
http://www.newegg.com/Product/Produc...82E16835150007
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Old 08-08-2008, 12:37 AM   #4
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Default Re: Molex Fans

my molex fans didnt come with any adapters, every fan i bought never had one.
But my CM case gave me like 3 that used to be a 3 pin but then converted to molex.
you can get one of these.
http://www.newegg.com/Product/Produc...82E16812119149
not sure how well it works.
this is the ones i got
http://www.newegg.com/Product/Produc...82E16812189119
or you can get one that splits the fan pin things on the mobo
http://www.newegg.com/Product/Produc...82E16812189063
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Old 08-08-2008, 02:38 AM   #5
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Default Re: Molex Fans

What size fans do you want? My Antec's and Yate Loons both have 3/4 pin adapters. The only time you don't see it is in fans that have a higher power draw like 38MM think fans or higher RPM 25MM thick fans.
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Old 08-08-2008, 03:16 AM   #6
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Default Re: Molex Fans

Ok, my motherboard has 1 4-pin connector. This will be used for a 92mm fan that I plan on mounting on my heatsink. However, I want to add an intake and an exhaust fan to my case, but there's no more 3/4 pin connectors, so I need to be able to power the fan through a molex connector.

edit: the 2 case fans will be 120mm. Also my heatsink is 92x92, so I think a 92mm fan should fit perfectly.
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Old 08-08-2008, 03:17 AM   #7
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Default Re: Molex Fans

What size are the case fans?

The 4-pin connector on the motherboard is a PWM fan, make sure to get one that has that kind of plug. Most PWM connectors are backwards compatible with 3-pin fans, but not all.
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Old 08-08-2008, 03:21 AM   #8
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Default Re: Molex Fans

I've never heard of PWM. What is that? Additionally, there is a 3-pin connector by my PCI-E x16 port, so I guess I could mount the back fan and connect it through there. That would only leave the front fan without a connector. Or I can just mount the front fan, connect it to the 4-pin and leave the heatsink without a fan. I won't be OCing, so do you think it could be a problem?
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Old 08-08-2008, 03:28 AM   #9
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Default Re: Molex Fans

PWM stands for pulse width modulation. I'm not too knowledgeable about this, but I'm pretty sure they control RPM's based on your CPU or other hardware's temperature.

http://en.wikipedia.org/wiki/Pulse-width_modulation

That depends on the heatsink. Heatsinks with wider fin-spacing will work better fanless. I would just plug the CPU and rear fan into the motherboard if possible, and run the front fan via 4-pin molex. Most fans come with these adapters anyway.

For the 120MM fans Yate Loons are good while being easy on the wallet. If you do go with these fans, make sure you get them from Petra's, they are the only ones who deal with Yate Loon directly. There are lots of fake ones floating around.

http://www.petrastechshop.com/12yalod1cafa.html

For the 92MM:
http://www.petrastechshop.com/92zazmsicafa.html
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Old 08-08-2008, 03:35 AM   #10
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Default Re: Molex Fans

I was thinking about this for the 120mm: http://www.newegg.com/Product/Produc...82E16811999099

And this for the 92mm: http://www.newegg.com/Product/Produc...82E16835186007
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