What would be better for extra fans?

bacon4life · Mar 29, 2015

Okay, I'm building my first pc and I was going to fill all the extra slots in my case with fans. (I have a Corsair 200R) This case can have up to 7 fans (not including the CPU fan), but I think my mother board can only support up to 3 fans.

I have a choice to use a splitter and connect them to my motherboard that way or use a fan speed controller.

Here's the splitter I was looking at: http://www.amazon.com/Phobya-4-Pin-Splitter-Power-Eight/dp/B00OD7MO6E/ref=sr_1_8?ie=UTF8&qid=1427668909&sr=8-8&keywords=pc+fan+splitter

Here's the fan controller: http://www.amazon.com/NZXT-Technologies-5-4-Inch-Controller-AC-SEN-3-B1/dp/B00KJGYLNM/ref=sr_1_1?ie=UTF8&qid=1427677974&sr=8-1&keywords=Fan+Controller

I not expecting my mother board to monitor all the fans if I use the splitter, but will it automatically adjust the fans's rpm when the temperature goes up or down?.

And with the fan controller, I'm afraid I won't have it high enough and the system will overheat. Plus just the picture alone, it looks kind of confusing, but I do think I can figure it out when I play with it a little.

I can't decide, I go back and forth. What do you guys recommend?

Hello man · Mar 29, 2015

bacon4life :

First off, leave your CPU fan connected to the motherboard header. Don't plug it into the splitter. Your system shouldn't overheat because your case fans are all running at 60%. The splitter may adjust the RPM depending on temperature, but usually only CPU fan headers have that capability by default. However this can be changed by using the more advanced features of Speed Fan, a piece of freeware that makes it super easy to control PWM fans that are connected to the motherboard. With speed fan you can link temperature sensors on the motherboard or GPU to control a PWM header. But honestly, unless you are buying some super silent case fans you are just going to make more useless noise by cramming seven fans into the case. More moving parts=more noise.

bacon4life · Mar 29, 2015

Hello man :

bacon4life :

First off, leave your CPU fan connected to the motherboard header. Don't plug it into the splitter. Your system shouldn't overheat because your case fans are all running at 60%. The splitter may adjust the RPM depending on temperature, but usually only CPU fan headers have that capability by default. However this can be changed by using the more advanced features of Speed Fan, a piece of freeware that makes it super easy to control PWM fans that are connected to the motherboard. With speed fan you can link temperature sensors on the motherboard or GPU to control a PWM header. But honestly, unless you are buying some super silent case fans you are just going to make more useless noise by cramming seven fans into the case. More moving parts=more noise.

Good point about the noise level, but I'm one of those people that don't care about the noise if it keeps it cool. It's like buying a truck that has a brand new under the hood components, but the body has dents and dings and rust. I don't care how it looks as long as it works

Hello man · Mar 29, 2015

bacon4life :

Hello man :

Good point about the noise level, but I'm one of those people that don't care about the noise if it keeps it cool. It's like buying a truck that has a brand new under the hood components, but the body has dents and dings and rust. I don't care how it looks as long as it works

Ill give you my crappy fans from my radiator. They sound like leaf blowers

Paperdoc · Mar 29, 2015

The splitter you linked to will do fine BUT only if you use it correctly. This works ONLY if you are using 4-pin fans, and ONLY if you connect it to a mobo SYS_FAN (case ventilation fan) port with 4 pins. You connect one of its input cables to a 4-pin Molex power output connector from the PSU, and that output certainly can feed up to 8 fans. Because of this, the mobo port you connect the other input cable to does not actually have to supply power to the fans. But it does supply the PWM signal in its Pin #4 that can be shared out to all the splitter's fans to control their speeds, but ONLY if those fans are all 4-pin units. The need for the PWM signal from the mobo port is why the splitter unit must be used with a 4-pin port.

That second input cable between splitter and mobo 4-pin port also will take the speed signal from ONE of the fans to the mobo to be monitored, but no others.

This splitter will place all of the fans connected to it under the automatic control system of the port you plug into. So you can control many case ventilation fans from one mobo 4-pin SYS_FAN port.

As Hello Man has said, do NOT use this for your CPU cooling fan. Connect that to the CPU_FAN port. But Hello Man said one thing wrong. Most mobo SYS_FAN ports DO automatically control the fans plugged into them according to a temperature measured on the mobo itself. This is very similar to automatic control of the CPU cooling fan, except that the CPU cooler system is guided by a temp sensor inside the CPU chip, not on the mobo. In all mobos I've used, each of these ports is set to use automatic control by default, although you can change that if you choose.

I agree that using mobo-based automatic control of fans is better than using manual control of fan speeds via a third-party controller, for exactly the reason you raise. How do you know what fan speed to set, and when to change it?

bacon4life · Mar 30, 2015

Hello man :

bacon4life :

Hello man :

Good point about the noise level, but I'm one of those people that don't care about the noise if it keeps it cool. It's like buying a truck that has a brand new under the hood components, but the body has dents and dings and rust. I don't care how it looks as long as it works

Ill give you my crappy fans from my radiator. They sound like leaf blowers

Only if they move air like one

Hello man · Mar 30, 2015

Paperdoc :

The splitter you linked to will do fine BUT only if you use it correctly. This works ONLY if you are using 4-pin fans, and ONLY if you connect it to a mobo SYS_FAN (case ventilation fan) port with 4 pins. You connect one of its input cables to a 4-pin Molex power output connector from the PSU, and that output certainly can feed up to 8 fans. Because of this, the mobo port you connect the other input cable to does not actually have to supply power to the fans. But it does supply the PWM signal in its Pin #4 that can be shared out to all the splitter's fans to control their speeds, but ONLY if those fans are all 4-pin units. The need for the PWM signal from the mobo port is why the splitter unit must be used with a 4-pin port.

That second input cable between splitter and mobo 4-pin port also will take the speed signal from ONE of the fans to the mobo to be monitored, but no others.

This splitter will place all of the fans connected to it under the automatic control system of the port you plug into. So you can control many case ventilation fans from one mobo 4-pin SYS_FAN port.

As Hello Man has said, do NOT use this for your CPU cooling fan. Connect that to the CPU_FAN port. But Hello Man said one thing wrong. Most mobo SYS_FAN ports DO automatically control the fans plugged into them according to a temperature measured on the mobo itself. This is very similar to automatic control of the CPU cooling fan, except that the CPU cooler system is guided by a temp sensor inside the CPU chip, not on the mobo. In all mobos I've used, each of these ports is set to use automatic control by default, although you can change that if you choose.

I agree that using mobo-based automatic control of fans is better than using manual control of fan speeds via a third-party controller, for exactly the reason you raise. How do you know what fan speed to set, and when to change it?

Actually if you have a crappy motherboard they SYS fan ports can sometimes only be sort of regulated in the BIOS. Like you get a choice of 100%, 70% or 50%. All 4pin PWM headers will control speed if you use some sort of fan control software, that is true.

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What would be better for extra fans?

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