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Fan Controller question

post #1 of 11
Thread Starter 
Hi, I've decided to get a fan controller for my case fans, and I'm wondering if there's any specs I need to keep in mind for compatibility. 3 of the fans will be 230mm, and one will be 140mm. Looking at some of the fan controllers on newegg:

http://www.newegg.com/Product/Produc...82E16811998038

http://www.newegg.com/Product/Produc...82E16811998055

http://www.newegg.com/Product/Produc...82E16811999220

The descriptions mentions Maximum Channel Voltage. Is that just the amount of power that can be supplied for each fan? How much is recommended for a 240mm? Thanks!
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post #2 of 11
Check your fans they'll say how many Amps they use (sometimes they'll say watts) Then you take the channel's max wattage (sometimes in amps) and make sure you don't exceed it.
The Channel is the knob you connect the fan into.Every Fan has a different power draw, My Gentle Typhoons are more power hungry then some of my other 120mm fans.


Personally I prefer Lamptron's fan controllers.
post #3 of 11
The idea is simple.
Each fan has a startup current and running current. Some fans are just marked as the startup one, which is the max the fan takes. This is how much power is needed to start it.
You only need to concentraite on the startup current, that is the max you need.

Fans are marked by either watt, or amp.
watt = amp*volt (aka if your fan is 0.36amp to start, it takes 4.32W).
I usualy round it up a bit, so if its 4.32W, I would say its 5W.

Now, on each channel you can put as many fans as you like, as long as you don't go over the channel max.
If the channel is 12W, you can put two 6w fans, or four 3w fans and so on.

If you put too much watt on each channel, it depends on the fan controller.
Some allow being over-current for a sec for the startup, some will whine, some will just blow and die.

I recommend going for the highest watt per channel that you can, considering the price, your own requirments, and the fans you are taking.

The scythe ones you linked are 12W per channel (or 1amp). The zalman is 7w, so I would go with the scythe one.
Personally I have the Scythe KM02-BK, which is decent and accurate enough.
On the zalman I would either put each fan on its own channel if you do go for it.
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post #4 of 11
Thread Starter 
K, this is what they say:

230mm: 12V 0.4A
140mm: 12v 0.14A

So, the 1 Ampere per rail controllers provide more than twice whats needed for a 230mm fan per rail?
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post #5 of 11
Yes.
post #6 of 11
Thread Starter 
Geez, is it intended for massive fans then, or is the value displayed on the fans not the startup current?
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post #7 of 11
Quote:
Originally Posted by Rokabud View Post
Geez, is it intended for massive fans then, or is the value displayed on the fans not the startup current?
fan size doesn't really matter too much the 120mm ultras use more power then your 200mm fans for example.
post #8 of 11
Thread Starter 
Thanks! I think I get it =) This one I'm looking at says it has a max of 30W per channel. So thats 2.5 amps? That seems like a big margin of variation between these, with some being at less than 1 amp.
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post #9 of 11
If you are only looking for a 30w/channel check out the lamptron.

http://www.mountainmods.com/lamptron...ver-p-623.html

they have both silver and black
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post #10 of 11
Thread Starter 
Quote:
Originally Posted by bratas View Post
If you are only looking for a 30w/channel check out the lamptron.

http://www.mountainmods.com/lamptron...ver-p-623.html

they have both silver and black
Cool a touch one!! Is it OK to go over the needed amount of power/channel? Since, my largest fans take less than an amp, is it alright to go 30+W??
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