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NZXT H440 - Need triple radiator advice

post #1 of 57
Thread Starter 
I myself would love some experienced opinions from some of you on cooling/airflow in general.

I've just built a new X99 system in an H440 and it's the first time I've actually ever used watercooling. I'm using a Kraken x61 on my 5820K and I have a Kraken x41 with a G10 mounting bracket on my 980 Ti. In its current state, I'm tremendously satisfied with my cooling setup; it is as follows:

- Kraken x61 280mm radiator cooling the CPU mounted at the top; the nzxt fans that came with it are replaced with two Noctua Industrial 3000 RPM 140mm fans in push, pushing air through the radiator out of the top exhaust vents in the cover

- Kraken x41 140mm radiator with G10 mounting bracket on 980 Ti is mounted at the front of the case toward the bottom with another Noctua Industrial 3000 RPM 140mm pushing air through the radiator also acting as in intake.

- In the other front 140mm slot at the front, I have another of the Noctua industrial 3000 RPM fans acting as an intake as well (my only sole intake fan, as the other is pushing through the GPU radiator, meaning the air is warmer than ambient temperature on that one.

- And finally, in the rear, I have yet another Noctua 140mm 3000 RPM fan acting as an exhaust, variable speed based on the temp of the GPU, as once that backplate starts to heat up, it warms the case so the exhaust fan starts pulling some of that radiation out of the back; otherwise this fan remains low and silent under normal conditions.

As stated before, I'm happy with this setup currently, BUT - Here's where I'd like some advice:

I have a second 980 Ti on the way tomorrow and I'd LIKE to liquid cool this one as well - Whether I go with another 140mm Kraken x41 or a 120mm Kraken x31 is kind of dependent upon the advice given here. The issue is where to mount the radiator. The most obvious spot is mounting it at the rear if the case where the current exhaust fan is, BUT - The H440 is pretty compact and is crowded enough with my 280mm radiator at the top as it is and the problem is that the 140mm radiator with a fan strapped to it is just too wide to fit between the rear mount of the case and the 280mm radiator up top. It won't fit in that space. If it weren't for the tubing at the bottom I could mount it just low enough to clear collision with the top radiator but unfortunately I found that this wouldn't work when I tried mounting my first x41 there.

There's a possibility that the thinner 120mm x31 radiator would fit, but it's not guaranteed. If it would fit, I think it would be more ideal, however there is a possible alternative:

Getting another x41 140mm radiator and mounting it in place of the top intake fan at the front of the case, right above my existing front-mounted 140mm radiator. The issue here is that I would no longer have any pure intake fans pulling in ambient air, but would instead have two 140mm fans in front pushing air through my GPU radiators into the case which hardly seems ideal. My current "best" idea (and this is what I really need advice on) is flipping the radiator fans in the front and making them EXHAUST instead of intake, and then turning the rear 140mm fan without a radiator into a pure intake fan instead of exhaust. This fan would perfectly and substantially provide cooler ambient air to my top mounted CPU radiator, and my GPU's 140mm radiators would be exhausting all GPU heat out of the front of the case and not contributing to any heat in the case at all. There would also be plenty of room in the front to make the 2 x 140mm's push/pull setups, adding an extra fan to each to help push that airflow out of the small vents of the front panel. There may also be a little extra intake airflow from the rear fan to cool the back plates of the GPU's if I turn the RPM up a bit assuming teh top radiator doesn't suck it all up. I realize reversing the entire normal airflow direction model is a bit unconventional, but at first glance it seems like it could work. What do you guys think??

To summarize:

I have an H440 that I'm trying to fit three AIO water cooling systems in, a 280mm for tmy CPU, and 2 x 140mm radiators for my 2 x GPU's. What's the solution??
post #2 of 57
Quote:
Originally Posted by thair7391 View Post

To summarize:

I have an H440 that I'm trying to fit three AIO water cooling systems in, a 280mm for tmy CPU, and 2 x 140mm radiators for my 2 x GPU's. What's the solution??

Instead of wasting money on CLCs, go into an open loop.
post #3 of 57
What ciarlatano said!

Open loops can be AIOs like Swiftech H220 X2 / H240 X2 / H320 X2 and Prestige, EK Predetor (most think it's not as good or as good a value as Swiftech), a custom loop kit or even a kit.

CLCs are garbage at best, and on GPUs only cool the video chip and not of the other components. This is why all custom loop builders use the big full cover blocks on their GPUs. wink.gif

If you don't want to do it all in because of expense, get one of the Swiftech AIOs and mount it like you have your first GPU .. or add on a full cover waterblock for GPU, 2 fittings, some hose and coolant to do CPU with GPU under a proper GPU waterblock instead of a Rube Goldberg adapter using a CPU waterblock.
post #4 of 57
+1 to what has been said..

But if you insist on sticking with your current set up PLEASE! for the sake of your cards if you haven't already put additional heatsinks on your GPU's VRM!
Many have said that its not needed but I blew out a 7950 WITH additional heatsinks.. Honestly I think you are slightly crazy for risking it on a couple 980ti.

The bottom card of the two's VRM will get crazy hot even with sinks, it works OKAY with a single card but with two the risk is increased drastically.

As for your actual question putting the rear and cpu cooler as intake may get you by, but it certainly will not be ideal.
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post #5 of 57
Thread Starter 
Apologizes for not clarifying, I have put individual heatsinks on the VRM's with TIM on each. The further I go, I realize I probably should have gotten into custom watercooling, but I'm not sure I'm ready for it quite yet.

Thank you both for your responses. Since I have industrial Noctua static pressure fans, I feel they're probably better suited forcing air out of the tight encloses front cover as exhaust than acting as intakes but if I use a high RPM airflow optimized fan in the rear, it should provide enough cooler air for the radiators, especially since all of the radiators are exhausting any heat out of the case. I can already tell how effectively this is being done because my internal case temperatures are never more than 2 or 3 Celsius higher than ambient temperature. I don't think I can fit a third 140mm radiator in the front because of the tubing so I've ordered the 120mm version (the x31) instead and will put it on my secondary card in my SLI setup since it runs significantly cooler than the primary.

Why are CLC's garbage? I have no argument for your statement; I'm just curious to hear your reasoning. It seemed ideal for someone like me who hasn't had any watercooling experience yet and wasn't ready for the part selections and failures that can come with it. Considering the temps that I get, they seem pretty good when I see how close they are to those of many people who have custom setups.
post #6 of 57
If by " not ready for it yet" you mean it`s scary and you are afraid of something leaking, dont be, if you take your time, and do a proper leaktest I`d say it`s safer than the CLC wich are just made as cheaply as possible.
post #7 of 57
Thread Starter 
Quote:
Originally Posted by outofmyheadyo View Post

If by " not ready for it yet" you mean it`s scary and you are afraid of something leaking, dont be, if you take your time, and do a proper leaktest I`d say it`s safer than the CLC wich are just made as cheaply as possible.

It's 50/50 - Half concern about inexperience, the other half considering how much I've already spent on my CLC's lol.

If I went custom, open loop with my 5820K and 2 x 980 Ti's, what would you recommend then for radiator placement? A 280/360mm on top for the CPU and another front-mounted 280/360mm shared between the GPU's?
post #8 of 57
I am not that experienced to give you placement tips I´ve only done 2 loops so far myself
post #9 of 57
last thing to add, use all of those rads as intake not exhaust.
want even better? ditch that case. it was made for silence not watercooling.
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post #10 of 57
Quote:
Originally Posted by thair7391 View Post

It's 50/50 - Half concern about inexperience, the other half considering how much I've already spent on my CLC's lol.

If I went custom, open loop with my 5820K and 2 x 980 Ti's, what would you recommend then for radiator placement? A 280/360mm on top for the CPU and another front-mounted 280/360mm shared between the GPU's?
Most custom loops are a single loop, often with no radiator between components. Loop water temps do not change much from before to after component block. That said, your 2x 980Ti's gentate several times the heat our 5820k does. Someone currently using H2O like @ciarlatano is more qualified at helping with radiator placement and loop order than I am.

And don't listen to 'use all radiators as intake' garbage talk. Sure, you can make all but the back exhaust intake, but where is all that intake flow supposed to go? Your system will only flow as much are into case and it can flow out of case. This means having 5 or 6 intake fans trying to push air into case and only 1x exhaust, the intakes can only push in the amount of air going out the 1x exhaust. End result is you have 5 or 6 fans that can only move as much air as the 1 exhaust, so your radiators don't have 5 or 6 fans of airflow, they have 1, maybe 2 fans of airflow.

For air to go in, it most be able to come out. tongue.gif
Edited by doyll - 6/23/16 at 4:00am
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