Jaikens19
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Hey Everyone, I recently just bought this card: https://www.evga.com/products/product.aspx?pn=11G-P4-6698-KR I had one question about it. I have a 4 pin noctua fan that I want to install on it, instead of the stock fan. However the cable connector on the GPU only support 3 pin. It willl not allow me to plug in a 4 pin connector. I have 2 options: 1: Plug the fan into either my motherboard, or fan controller instead of the GPU fan connector 2: Buy a 4 pin to 3 pin fan adapter Will Not plugging the fan into the GPU cause issues, or cause the GPU not to function or work properly? If so, does anyone recommend a fan adapter that would work well with Noctua NF-F12 fans?
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KyoukiDotExe
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 2:11 PM
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This thread also talks about it: I can't link it since I don't have enough rights for it apparently but a duckduckgo search like: "evga ftw3 hybird fan header pin adapter" landed me on the evga forums page. I also made this mistake sadly. 
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ksgnow2010
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 2:18 PM
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☼ Best Answerby Jaikens19 Tuesday, April 24, 2018 2:43 PM
The best option is to run it off of a motherboard header. This way you can control the radiator fan how you wish.
I run all of my hybrid setups this way.
You will not harm anything by doing this. The fan on the card will still spin, and is the fan speed that will be controlled by software such as EVGA PoC and MSI Afterburner.
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KyoukiDotExe
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 2:21 PM
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ksgnow2010
The best option is to run it off of a motherboard header. This way you can control the radiator fan how you wish.
I run all of my hybrid setups this way.
You will not harm anything by doing this. The fan on the card will still spin, and is the fan speed that will be controlled by software such as EVGA PoC and MSI Afterburner.
It's a tiny cable though, and you require to manually set the fan speeds instead of EVGA/the card itself reading the fan and doing it for you? Right?
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ksgnow2010
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 2:35 PM
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KyoukiDotExe
ksgnow2010
The best option is to run it off of a motherboard header. This way you can control the radiator fan how you wish.
I run all of my hybrid setups this way.
You will not harm anything by doing this. The fan on the card will still spin, and is the fan speed that will be controlled by software such as EVGA PoC and MSI Afterburner.
It's a tiny cable though, and you require to manually set the fan speeds instead of EVGA/the card itself reading the fan and doing it for you? Right?
It's the radiator fan. You run it as fast as you can stand the loudness of it. It takes time for the coolant to heat up and cool down (i.e. the thermal mass of the cooling system is much larger...it's like the radiator on your car...your car doesn't start and then hit max temperature in 5 seconds). Linking the radiator fan speed to the GPU temperature will "lag" behind the actual GPU temperature. The GPU fan on the hybrids only cools the memory and VRM section. In my main system, I have two Titan X Pascal cards with the EVGA hybrid kit installed. I have them setup like this: - Each GPU radiator has two Corsair ML120 fans installed in push pull. - I have a fan splitter cable installed, so each radiator fan "set" only takes 1 motherboard header. - I have these fans set to run at 70% (still very quiet) at all "CPU" temperature under 80C (through the BIOS) - For 80C and higher, I increase the fan speed to 100% (my theory here is that if my CPU is this hot, something else is probably hot as well). - I have the fans on each GPU set to run at 50% (still very quiet) at all "GPU" temperatures under 80C (through EVGA PoC) - For 80C and higher on GPU, I increase the GPU fan speed to 100% (my theory here is that if the GPU is this hot, something is going wrong and I want to keep the VRM section as cool as possible...as the GPU speed will throttle itself to avoid damage). Also, I will easily be able to hear the GPU fans at 100%...so I can intervene if necessary.
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Jaikens19
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 2:44 PM
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ksgnow2010
The best option is to run it off of a motherboard header. This way you can control the radiator fan how you wish.
I run all of my hybrid setups this way.
You will not harm anything by doing this. The fan on the card will still spin, and is the fan speed that will be controlled by software such as EVGA PoC and MSI Afterburner.
Thank you! Just wanted to make sure I wasn't screwing up anything by running off of a header off of my motherboard
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ksgnow2010
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 2:54 PM
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No problem!
I have thought about putting in a full custom loop many times.
The hybrid kits do a pretty good job of keeping the GPU cool (much better than any air cooled option) and are much easier to install and setup...without the "custom loop" maintenance.
I have an AIO on my CPU as well. I run the CPU AIO radiator and both GPU radiators as intake into my case. Additionally, I have two 140 mm Corsair ML fans as intake on the bottom, 2 140 mm Corsair ML fans as exhaust on the top, and 1 Corsair ML 140 mm fan as exhaust out the back.
The figure of merit for AIO (and other water cooling systems) is "delta T". Said differently, what is the coolant temperature (or GPU/CPU temperature) relative to the temperature of the air entering into the radiator for a given power level...in steady state (10 to 20 minutes).
This setup keeps my GPU temperatures 44 to 48 C with 28 C ambient (I live in Florida). The radiators are always drawing in "cool" air (and ejecting "warm" air into the case). The extra intake on the bottom gives me more "cool" air into the case, and the 3 exhaust fans push out the heat nicely.
If you run your radiators as exhaust, you will need plenty of intake fans. However, your GPU will run hotter as you will be drawing "warmer" air into your radiators for cooling...with the same "delta T" your GPU will be warmer.
I hope this makes sense.
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Jaikens19
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 3:01 PM
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ksgnow2010
No problem!
I have thought about putting in a full custom loop many times.
The hybrid kits do a pretty good job of keeping the GPU cool (much better than any air cooled option) and are much easier to install and setup...without the "custom loop" maintenance.
I have an AIO on my CPU as well. I run the CPU AIO radiator and both GPU radiators as intake into my case. Additionally, I have two 140 mm Corsair ML fans as intake on the bottom, 2 140 mm Corsair ML fans as exhaust on the top, and 1 Corsair ML 140 mm fan as exhaust out the back.
The figure of merit for AIO (and other water cooling systems) is "delta T". Said differently, what is the coolant temperature (or GPU/CPU temperature) relative to the temperature of the air entering into the radiator for a given power level...in steady state (10 to 20 minutes).
This setup keeps my GPU temperatures 44 to 48 C with 28 C ambient (I live in Florida). The radiators are always drawing in "cool" air (and ejecting "warm" air into the case). The extra intake on the bottom gives me more "cool" air into the case, and the 3 exhaust fans push out the heat nicely.
If you run your radiators as exhaust, you will need plenty of intake fans. However, your GPU will run hotter as you will be drawing "warmer" air into your radiators for cooling...with the same "delta T" your GPU will be warmer.
I hope this makes sense.
No that does make sense. you're keeping the core components cool (CPU,GPU) and spitting the warmer air into your case to be pushed out of the system. As apposed to having the rad's doing the exhaust. That doesn't sound half bad. 44 - 48 C on the GPU in Florida is perfect. I may have to try this with my build. I live in a colder state (New Hampshire) so if anything i may see lower temps then you ;)
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ksgnow2010
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Re: Question about EVGA GeForce GTX 1080 Ti FTW3 HYBRID
Tuesday, April 24, 2018 3:11 PM
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 A push/pull setup (1 fan on either side of the radiator) overcomes the status pressure drop of the radiator as the static pressure is cumulative when in series (CFM is cumulative in parallel). With 2 fans in push/pull you get more air flow for a lower fan speed (as the radiator is a high pressure block to the air flow). Check out the Corsair ML fans (I run ML Pro LED fans in red LED). They have a pretty "flat" P/Q curve, and I find I like them better than the Noctuas (they are quieter for me). After I started using the ML Pro fans, the Noctuas went into the "land of misfit fans box."
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