Basic (probably n00b) Question about Motherboard Fan Ports

[KaosFaction]

Do the motherboard fan ports have a general "limit" to the amount of fans connected?

Basically, can I daisy-chain the molex connectors on fans, then plug into the motherboard's fan port?

Practical example is daisy chaining two D12SH-12s on a Venomous X then plugging into the CPU Fan port on the mobo. This an issue?

Thanks preemptively!

PS - Specific conditions if they do become of concern:
Asus Sabertooth X58
Venomous X
2x D12SH-12s
BFG LS1200

 

[BoomerD]

Each board will have a maximum wattage that the fan connectors can handle.
I have two Noctua fans on my CPU cooler...plugged in with a "Y" cable to the cpu fan connector on the board.
Read your motherboard documentation. It SHOULD tell you.

 

[schmunk]

I calculated this once on an Abit board (by spec in manual and adding up fan amps), and it turned out it could support somthing like 5 or 6 of the 120mm fans I was running, but each board is different.

 

[mclaren777]

I was planning to get one of these fan controllers for my upcoming build.

Any reason why I should/shouldn't?

 

[stahlhart]

My only question about one of these would be how it would impact monitoring of the fans' RPM -- you get that through the BIOS through the motherboard headers normally.

By using high quality brushed aluminum, this product has precious appearance.

I think that someone needs to go outside and get some fresh air. :whiste:

 

[Hogan773]

I got the Rosewill Challenger, and I believe 2 of the 3 fans just have the big Molex power connectors. Does this mean I should plug those into the PSU directly, and I guess they just run at full power whenever the computer is on?

Or am I supposed to get a Molex adaptor and plug them into the mobo headers?

I guess as long as the fans are pretty quiet I don't care if they are adjusting their speed or just running......and I know 1 of the 3 fans can go into the mobo as it is now.

Anyone else know what is best option?

 

[schmunk]

My only question about one of these would be how it would impact monitoring of the fans' RPM -- you get that through the BIOS through the motherboard headers normally.



I think that someone needs to go outside and get some fresh air. :whiste:

THe small non molex Fan connectors (like the ones that go on your MB headers) have three wires a black, red and yellow. The yellow, (if your fan has it) is the RPM sensor wire. Even if you hook the red and black (power and ground) up to a different power source (like a fan controler) you can still run the yellow wire to the MB to sense the RPM. You can get or make wires that have the female power connector going to a molex conector and only the yellow wire going to a new three prong female connector that you can plug into the MB. Some fans are set up like this stock, I think Arctic Cooling has some.

http://www.coolerguys.com/840556028949.html?productid=840556028949&channelid=FROOG