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Radiators for 4-way 980 Ti

post #1 of 6
Thread Starter 
Hi,

I am new to water cooling and I am simply collecting information at this point. If I were to use a single loop to cool a 6700K CPU, the chipset and 4x 980 Ti, how many radiators should I install and where should I place them in the loop?

Thanks!
post #2 of 6
6x 120mm radiator should suffice. Loop order doesn't matter as long as you have the pump after the reservoir.
post #3 of 6
That depends how fast do you want your fans? If you want really fast fans then ya go with 6x120. The rule of 1x120 plus 1 or 2 ect is horrible. Even with fast fans people that run configs like that (qaud and tri sli or quadfire.) are going to tell you, you need rad space as you have wattage.

So an EK XE 360 can disaapate about 400 watts with 1850rpm fans in push pull with a 10c delta. So if you had 2 of those you can dissipate 800ws of power, at a 10c delta.

A 10c delta is mediocre anything over that is unacceptable and you should just air cool. A 5c delta is pretty good, under 5c is great.

Now the cards you are planning are going to use about 800ws stock overclock them they will use more. In Furmark more like 1000+ most likely.

That means if you go with 2 EK XE 360s with 1850 rpm fans you will barely handle the GPUs at a 10c delta never mind the CPU and its wattage and cooling.

So no 6x120 is far from enough, the rule of thumb I use is 120x PSU Wattage, So if you have a 1300w PSU you should have 13x120 rad space. I would go no less than 9x120 and even that is pushing it honestly, that will keep you at about a 10c delta (a tad less) with PP 1850 rpm fans. Want slower fans more rad, want better overclocks, more rads or faster fans.
Edited by Cyber Locc - 2/12/16 at 11:40am
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post #4 of 6
Thread Starter 
Thank you for all the information! This is really informative!
post #5 of 6
From my experience, I have four Titan Blacks, and my first build included six 120 mm radiator sections in 360 + 240 + 120 configuration. I was not happy with performance. I was getting up to 55 C water temperature, and GPU cores up to 60 C, with fans at 1500 RPM which I consider noisy.

I have since then rebuilt the loop with four 480 mm radiators and this is day and night, with water temperature up to 40 C at 900 fans RPM. As usual YMMV and I know many people would consider this overkill.

This is GPGPU rig so 100% 24/7 load is common. You will see lower temperatures while gaming. I'm running my GPUs at stock though.
post #6 of 6
Quote:
Originally Posted by cmpxchg8b View Post

From my experience, I have four Titan Blacks, and my first build included six 120 mm radiator sections in 360 + 240 + 120 configuration. I was not happy with performance. I was getting up to 55 C water temperature, and GPU cores up to 60 C, with fans at 1500 RPM which I consider noisy.

I have since then rebuilt the loop with four 480 mm radiators and this is day and night, with water temperature up to 40 C at 900 fans RPM. As usual YMMV and I know many people would consider this overkill.

This is GPGPU rig so 100% 24/7 load is common. You will see lower temperatures while gaming. I'm running my GPUs at stock though.

Overkill pshhhh that is the only way to build a loop smile.gif, besides this is OVERKILL.Net thumb.gif

I am with him as you already know but just to give you an idea, I had 3 480s and a 4820k with a high OC, with 2 290s (OCed) when I added the third the temps were not up to par, So now I am swapping my 480s with 3 560s 1 for the CPU and 2 for the GPUs smile.gif So I do practice what I preach smile.gif FYI a 560 rad is 5.5x 120 so that is 11 x 120 just for my 3 290s smile.gif.
Edited by Cyber Locc - 2/12/16 at 3:59pm
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