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H100i & 2 x 180mm fans


tuk

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If this has been covered already, please post a link to the relevant threads.

 

I have my H100i installed in a SS FT02 case:

http://www.silverstonetek.com/product.php?pid=242&area=en

 

The Corsair 'fan power cable' appears to use different connectors from the FT02 case fans, I haven't looked into this deeply but I'm sure this can be resolved with some modding.

 

My main question is will the H100i twin fan controller be able to cope with 2 x 180mm case fans? ....as these fans are heavier than the Corsair fans, I'm assuming they need more power to drive them.

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You can mount 180mm case fans onto the 120mm hole alignment :confused:. What exactly is the the difference you mentioned there was a difference with the fan connectors.

 

 

P.S

I need to RMA my fans because I have a product that game with the 3pin fan connector and not the PWM 4 PIN which fixes a bunch of rattle and noise complaints.

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You can mount 180mm case fans onto the 120mm hole alignment :confused:.

I haven't moved the case fans.

 

What exactly is the the difference you mentioned there was a difference with the fan connectors.

The case fans are 3pin(red, yellow & black) not 4pin like the H100i

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I haven't moved the case fans.

 

 

The case fans are 3pin(red, yellow & black) not 4pin like the H100i

 

You said

My main question is will the H100i twin fan controller be able to cope with 2 x 180mm case fans? ....as these fans are heavier than the Corsair fans, I'm assuming they need more power to drive them.

I asked if 180mm mounts on 120mm hole alignment not if you moved the fans around.

 

PWM, ok should have just said that it makes a lot more sense told that way and I have the H100i and my fans are 3 pin, I made a thread with complaints about the whine and rattle issue because of it and I'm told Corsair will send replacement updated PWM fans FREE of charge once you create an RMA ticket explaining the issue. Though I don't know. I hooked up two of my case fans using the second fan connector thing that goes onto the pump. I am running a 230mm fan and a 120mm. What used to be an exhaust fan I turned around to take air in and the 230mm is taking intake air from the side I find with this setup I get a whole lot of air being directed over the motherboard and RAM and then the H100i is the exhaust point. I think you should be fine with 180mm larger fans spin at much lower RPM and use less power anyway.

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I asked if 180mm mounts on 120mm hole alignment not if you moved the fans around.

How would you mount the 180mm fans on the 120mm hole alignment without moving the fans?

 

...maybe you need to explain why you would ask such a thing when I have not mentioned the '120mm hole alignment'

 

I think you should be fine with 180mm larger fans spin at much lower RPM and use less power anyway.

Are you sure about that? ...what is the current rating on the default H100i/120mm fans?

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How would you mount the 180mm fans on the 120mm hole alignment without moving the fans?

 

...maybe you need to explain why you would ask such a thing when I have not mentioned the '120mm hole alignment'

 

 

Are you sure about that? ...what is the current rating on the default H100i/120mm fans?

 

First, my bad I read you wrong I thought you were going to use 180mm case fans on the radiator :roll: obviously you are asking if you can hook up larger fans using the extra 2 headers provided with the 100i that attach to the corsair link.

 

Secondly

I don't know what the rating is but all fans with 3pins run at 12v or lower, you can reduce the voltage with a reducer cable which will reduce a fan and consequently the speed the fan is capable of running at.

 

180mm does not use more power than a 120mm or a 200mm they all use 12v power and you can even connect these fans to a car battery it does not matter as long the feed is 12v if the feed of power is less the fan will just be speed limited as the motor is getting less voltage. What corsair link can do is both monitor and adjust the regulated voltage by taking a 12v feed and splitting it out to the fans by coupling to the existing 12v power being fed to the pump. This how you get the fans to slow down and be speed adjusted but fans designed for this should be PWM which are 4 pin not 3 pins.

 

However you can connect 3 pin to a 4 pin header just look at the notch on the fan connector and align that with the notch on the header that will provide the power in this case the H100i Corsair Link fan headers. They have 4 pins but you can just plug the 3 pin onto that header so the notch lines up like it should and will work just fine just minus the stuff that PWM supports.

 

It will not damage the fans and it will not damage the pump. I mentioned I ran a 230mm side panel intake fan and a 120mm rear exhaust by using the extra 2 headers that came with pump. This is normal and will work just fine.

 

This fan is a reasonable fan to compare to the ones which ship with the H100i you will notice it operates between 7v-12v this means the fan can be reduced which will make the fan at a slower RPM and make it more quiet.

 

I installed this 120mm at the rear and this 230mm on the side. current requirement is a little higher for this fan but its apples its not really something that is going to hinder pump.

 

So yes I am sure if I can run 230mm of the pump headers you should be able to run 180mm.

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First, my bad I read you wrong

No worries, thanks for clarification, for my part I could have been clearer in the OP :)

 

you are asking if you can hook up larger fans using the extra 2 headers provided with the 100i that attach to the corsair link.

exactly

 

I don't know what the rating is but all fans with 3pins run at 12v or lower, you can reduce the voltage with a reducer cable which will reduce a fan and consequently the speed the fan is capable of running at.

 

180mm does not use more power than a 120mm or a 200mm they all use 12v power and you can even connect these fans to a car battery it does not matter as long the feed is 12v

 

I don't have have a strong grasp of electronics/electricity, but speaking to people who do I'v picked up a a few things over the years, Yes compatible components must have the same voltage rating..in this case 12v, but current rating is also important, while the components involved might be 12v they will only be rated to draw certain amounts of current without causing damage to themselves or even fire.

 

Smaller fans might spin faster, but the blades are smaller & lighter and generally shift less weight of air. These different factors can make it difficult to compare.

 

So lets consider the spec of the fans in question to simply:

 

CASE FAN:

SIZE: 180mm

Voltage: 12Volts

Current: 0.45Amps

CFM: 80-130

RPM: 700-1200

 

H100i FAN:

SIZE: 120MM

Voltage: 12Volts

Current: 0.36Amps

CFM: 74.42

RPM: 2700

 

The below wont be exact as there are other things involved, but I think? its accurate enough for the sake of discussion.

 

The 180mm fan is rated to: draw 25% more current & shift 75% more air even thought the rpm is much higher on the 120mm fan.

 

Power is calculated: P(watts) = I(Amps) x V(Volts)

 

Case Power: 5.4W = 0.45A x 12V

H100i Power: 4.32W = 0.36A x 12V

 

Which means the case fans potentially use 25% more power than the default Corsair fans.

 

How much this matters I'm not sure, which is why I made this thread as I wouldn't like to damage the H100i by having it channel more power than its been designed/rated for.

 

 

if the feed of power is less the fan will just be speed limited as the motor is getting less voltage. What corsair link can do is both monitor and adjust the regulated voltage by taking a 12v feed and splitting it out to the fans by coupling to the existing 12v power being fed to the pump. This how you get the fans to slow down and be speed adjusted but fans designed for this should be PWM which are 4 pin not 3 pins.

I have a different understanding of how this works:

 

The only difference between 3pin and 4pin(pwm) is the extra pwm wire.

 

A 4pin(pwm) fan has a fan/voltage controller built into the fan housing & this internal voltage controller take instruction from the pwm wire and adjusts the voltage to the fan motor accordingly, making the fan spin faster/slower.

 

Which creates a problem of how to connect a 4pin(pwm) output to a 3pin fan ...& keeping pwm functionality.

 

I think the connector would need to contain a fan controller(like those found inside pwm fans) which can take instruction from the pwm output on the H100i and subsequently adjust the voltage of the 3pin fan.

 

As far as I understand it, the H100i doesn't contain a voltage controller only a pwm controller.

 

 

But as I said I'm not sure :laughing:

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Hey guys this should clear things up for you. This thread is for the H80 but still applies to the H100 since they use the same basic controller.

 

Originally posted by RamGuy:

 

The fan controller is optimized for our fans so if you use other fans you will likely have to use the MB or another fan controller. But you can try it and see if it works okay. Just the fans you use cannot draw more than 2 amps each.

 

http://forum.corsair.com/v3/showthread.php?t=100238&highlight=amps

Which creates a problem of how to connect a 4pin(pwm) output to a 3pin fan ...& keeping pwm functionality.

It can't be done. 3 pin fans use different voltages to control speed (5,7,and 12v)and PWM uses pulses of full power to control speed and is only available with 4 pin PWM fans. Best bet is to control them (3 pin)with the MB or separate fan controller.

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Thanks for the replies guys, eventually got this working after looking into peanut's suggestion and rigging the 3x chassis fans to the lovely 3x profile-controlled, chassis fan headers(1A) that I discovered on my v gene mobo:D:

 

To give you an idea of temps after some limited testing:

 

I7-3770K@3.9Ghz, 18C Ambient intake.

 

Idle, browsing etc for several hrs:

CPU: 15-19C

MOBO: 19-21C

GPU: 20-21C

 

BF3@1920X1080, Ultra/Max Settings for 2hrs:

CPU: 43C(max)

MOBO: 23C(max)

GPU: 54C(max)

 

Prime95(Small FFTs stress test) for 1hr:

CPU: 58C(max)

MOBO: 20C(max)

GPU: 23C(max)

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