talkischeap

RipGroove
Well that kind of sucks because it's quite loud, looks like I'll have to use a header on the motherboard and a 4 pin PWM fan and have it ramp up with CPU temp, I assume that'll be OK? As whenever the GPU is under under load generally the CPU is too.

That all depends on what CPU and how you cool it.  They typically don't align.  That's all up to you.  Set it up and watch your temps.  Allot of people complain about the fan noise.  Not sure If I got lucky and got a quiet one or my tempered glass p400s just reduces the sound allot, but I don't notice it very much at all.  The VRM fan (when over 50%) is audible over anything in my case including that fan.

demo23019
I can clearly hear it get louder when temps hit 45-50 range ive even unplugged it to make sure its in fact the rad fan im hearing rev more. Its def not fixed speed.

rjohnson11
I'll forward your query to EVGA.

EVGATech_JosephL
The radiator fan is variable but not controllable. It will increase to a small degree when the temperature increases but the changes are slight so you may not notice them.
 
You can try hooking up the header to another device or the motherboard but I have seen very mixed success with this. Often no changes can be made to the radiator fan speed from what I have seen.

demo23019
I can clearly hear it get louder when temps hit 45-50 range ive even unplugged it to make sure its in fact the rad fan im hearing rev more. Its def not fixed speed.

EVGA support say it's supposed to be fixed speed so either there is something wrong with your card or EVGA are wrong?! Still not %100 sure now myself.

Hello,

On that card, both the fan and pump will run at a constant speed. There may be some confusion with this hybrid cooler and the CLC CPU cooler that we recently released, which does have more variation. The Fan slider/s in the Precision XOC program will just allow you to vary the VRM fan mounted to the PCB of the card. If you want PWM control of the fan you can unplug it from the card and run it straight from the motherboard, but that is not usually necessary or beneficial.

Regards,
EVGA

EVGATech_ErinW

RipGroove

demo23019
I can clearly hear it get louder when temps hit 45-50 range ive even unplugged it to make sure its in fact the rad fan im hearing rev more. Its def not fixed speed.

Must be something wrong with mine then. It stays at the exact same RPM all the time. If I can get an official reply I guess I'll have to RMA it.

The radiator and pump operate at a fixed speed. The four pins on the fan header are tach, PWM control, +12V, and ground. The pump and radiator tap power from the +12V fan power feed from the card. Only the fan on the card itself is variable, as it has the connections to the PWM control signal. The +12V is constant, and doesn't change.
 
If your radiator fan is changing speed, it's not doing so in response to the temperature. 

happyguy82

RipGroove
Well that kind of sucks because it's quite loud, looks like I'll have to use a header on the motherboard and a 4 pin PWM fan and have it ramp up with CPU temp, I assume that'll be OK? As whenever the GPU is under under load generally the CPU is too.

have you connected your radiator fans to the GPU with one of these?: https://www.ekwb.com/shop...n-adapter-for-gpu-50cm

RipGroove

EVGATech_ErinW

RipGroove

demo23019
I can clearly hear it get louder when temps hit 45-50 range ive even unplugged it to make sure its in fact the rad fan im hearing rev more. Its def not fixed speed.

Must be something wrong with mine then. It stays at the exact same RPM all the time. If I can get an official reply I guess I'll have to RMA it.

The radiator and pump operate at a fixed speed. The four pins on the fan header are tach, PWM control, +12V, and ground. The pump and radiator tap power from the +12V fan power feed from the card. Only the fan on the card itself is variable, as it has the connections to the PWM control signal. The +12V is constant, and doesn't change.
 
If your radiator fan is changing speed, it's not doing so in response to the temperature. 

Thanks for clarifying, so my GPU is fine and functioning as intended. Just a shame the rad fan 'seems' loud as the rest of my system is almost silent when idle. I'll probably change the rad fan for a 4 pin PWM connected to a motherboard header just so I can have it slow down a little when the system is idle. I'll have to test which temp target to assign to that fan in order to keep the GPU nice and cool.