Question which fans to plug in the cpu fan socket?

[abdom]

I have a case with 3 fans at the front, the 240 rad i bought will only fit at the front I have now worked out Grrr. The radiator came with 2 rgb fans. I i mount the rad at the front and the fans at the top as exhaust. should I try to hook up the front fans to the cpu speed control or will putting the exhaust fans on the socket be ok?

 

[tennis2]

Connect the fans that are cooling the CPU to the CPU fan header.

Having more than 1 exhaust fan with your rad setup will result in negative air pressure, just an FYI

 

[abdom]

I am not sure which fans are cooling the cpu if the radiator is at the front. should I mount the radiator fans inside and turn the case fans on the front of the case off?

 

[abdom]

Just found out the case fans do not provide same pressure as cpu fans. So cannot fit the radiator and the fans in my case doh

 

[Karadjgne]

You are all kinds of mixed up.

You have a rad that came with fans. You should use those with the rad. You can mount them interior as pull or exterior as push, your choice, but interior usually works a little bit better.

You take the original case fans and mount them on top as exhaust.

The case fans go by splitter to the sys_fan header, doesn't really matter which one. The rad fans plug into cpu_fan or the pump. The pump gets plugged into either cpu_fan or a sys_fan or cpu_opt/aux/pump or Sata. Kinda depends on the way the pump is designed.

 

[tennis2]

Here is how an AIO/water cooling/radiator works: liquid is pumped through the system, from the CPU block to the radiator and back. When the water crosses the hot CPU, it warms up. When the water gets to the cool radiator fins, it cools down. Then back to the CPU and so on.

When you have a radiator, the only fans that are cooling your CPU are the fans that are screwed into the radiator.

Any other fans in your system are helping cool the GPU, hard drive(s) etc etc. There's more to it than that, but I'll leave it alone.

 

[Karadjgne]

No. When the coolant is shoved through the micro-fins inside the pump housing, it picks up heat energy which is transfered to hose and the radiator fins. Where it gets dissipated, transfered to the surrounding airflow. It takes a massive, constant amount of energy to heat up liquids, even as little as 1°C. The coolant can take upto half an hour to warm up 1°C, depending on the wattage output of the cpu.
If in doubt, slap some water in a pot on low heat and see how long it takes to get a little warmer, that's about the same output wattage as a cpu. A burner on high is putting out 1500w+.
Its the latent heat energy the liquid is moving, not any actual heat. The hose gets warmer because it has little in the way of being able to dissipate the heat energy, so that energy sticks around and warms up the hose. But the actual coolant is almost the same temp coming out as it is going in, which is why in custom loops it doesn't matter where the radiator is in regards to loop position.

 

[tennis2]

Ok, let's not get pedantic. Trying to keep it simple for the OP.

 

[abdom]

Not sure anyone is really answering my problem which must be really common looking at most cases. A Thermaltake J24 has 3 case fans at the front. The only place my twin radiator will fit is at the front behind the case fans.
The fans that came with and fit on the radiator are in the way of my video card and other stuff so I cannot use them easily. If I did get them to fit can I use case and cpu as push pull? I am pretty sure I cannot. So I was only wondering if I could use the case fans to cool the radiator and perhaps hook them to the cpu fan control as they are already blowing into the radiator. I might add the spec of the case says this is where the rad should go. I don't know how to post the picture. Anyway I might just sell the radiator or the case and get one that does fit