2x360mm rad, yet high load temps.

Shengli

Shengli

Shengli

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1 Oct 2015
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Hey All.

I believe this is my first post here so be nice :p

I have problems with very high load temps on both Gpu and Cpu.

In Battlefront beta @ 2560x1400p all high settings @ 120hz
i got 83c gpu and up to 85 on cpu.

* Edit * Also every time the temps go over 76+ i start hear bubbles in the loop (a lot) and i have to set the pump speed to max and open the top of the reservoir to get them out.

I do have all fans and pump on relative low speed settings since i wanted
a quiet build. Hence all the rad space.

I did try to open the entire case and run fans and pump at max it did of course make a difference but the temps are still around 74+


The setup

Nzxt H440
5820k @ 4.4ghz, 1.184v
Gtx 980 @ 1500mhz

Both are watercooled using:

1x 360mm Alphacool st30 in front with 3 x Nb Eloop b12-ps fans, Intake
1x 360mm Alphacool st30 in top with 3 x Nb Eloop b12-ps fans, Intake
1 x Nb Eloop b12-ps fan in the back as exhaust
Alphacool VPP655 - PWM (D5)
EK - Supremacy EVO - Acetal + Nickel (Original CSQ)

Picture:
IMG_20150508_151005.jpg


My first mistake is the 6 fans on the rads are all intake.
leaving the last (7th) fan to exhaust all the hot air out.

Of course it cannot cope with that alone. So next time i change the water i will turn the 3 top fans around to exhaust in stead of intake.


I was also thinking about getting a 120mm radiator in the back for a total of
840mm radiator space but i doubt it would help that much? or would it?

Can anybody tell me why the temps are that high?
Should i try to re seat the cpu blok? or what can be the problem?
 
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As above, check all air is out of the loop.

As for fan setup I'd have front/rear as intake and the roof ones as exhaust.

With the radage(ample) you have I'd expect Cpu around 50ish and the Gpu around 40ish.
 
Hey Petey

I edited the text slightly in the top.

Well a week ago i did run the pump at max and jiggle all the tubes, tap on the radiators.
and tilted the case around until i did not see or hear any more.

But after playing and the temps get around 75'ish the bubbles starts appearing again.
 
Hey Scotty

Wow that low?. I would not dare dream of temps like that. I know the Haswell-e runs hot but mine is out of my safe zone.
I did try lower the Gpu overclock down to 1390 i believe it was an significantly lower voltage. The Gpu was around 74 (was 83 before) in battlefront. But Cpu was still the same
 
It can be a pain to bleed and sometimes, you even have to do stuff like flip the whole case (make sure your pump isn't dry if you do this! Maybe turn the pump off if you're gonna flip it) or tilt it in such a way as to shepard the air out towards the res
It's also much easier to see where your airlock is when you have clear tubing.
 
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I could try later when i get home, like you said to power it off remove the cables in the bag and really tilt it.
Btw i did not fill the reservoir 100%, so im not gonna tilt it 180* since i would just move that left over air in the reservoir back in the radiator and what not.
 
I Would like to answer but i can't remember what paste i used in the Cpu. I will check when i get home. The Gpu was bought second hand with the waterblock already attached so i can't tell. But the guy was very thorough and knew a lot about watercooling. So i doubt he used some cheap brand. Granted he could have mounted it a little skewed.
 
Both temps seem high, I have a similarish setup in a H440 and my GTX titan never exceeds 50°C, though my 2550K will get into the 70s.

Can you check your water temps? I find that my GPU is within a few degrees of my water.

I used to run 8 (6 were push pull on a 360mm rad) intake fans and a single rear exhaust and found that changing the roof to exhaust didn't really change temps at all.
 
has the loop been bled completely/properly? you should run the pump on max initially for the first few hours/days to ensure all the air is out of the loop

that kinda temps are insane.
im running 2x7990 on a 480mm rad and they don't go above 55c
 
I think i have to read up on how to properly bleed my system. It would be wierd if both Gpu and Cpu blocks er not correcly attached seeing that i did the cpu and the other guy did the gpu.

I have no way of checking my water temps unless i buy a thermometer.

@Disco_P I have my pwm fans running at around 500rpm. But then again even at full throttle i only saw a 6-10 degree different.

Any tips for exactly how i can get this trapped air out? if there is any. Or could i have made any other mistakes?
 
Everything was bought new except the Gtx 980 and the waterblock.

Yea i followed some videos from jayztwocents. I flushed both with hot water until it was only water coming out and not those black things :)
 
Just now at windows with nothing running Cpu is 46c and Gpu is 41c

Pump at 1100 rpm and the 6 rad fans are at 520 rpm.

I am not using speedstep or C-states.
 
Air in the loop won't make that much of a difference unless there is A lot of trapped air. Just re-done mine, couple hours into the bleed test GPUs idling at 17c and cpu is at 20c. And that's with two 980Ti's and a 5930k with 2x 480s and a 240. Under load (gaming) my cpu is low-mid 40s and gpus mid 30s after hours of gaming. Yours should be much lower with a cpu and 1 GPU in the loop.

Let the system warm up and tilt the case in all directions to about a 45 degree angle (make sure coolant doesn't come out). You should hear the trapped air, stop and tilt the case in another direction once the noise stops. Make sure the pump is on full speed as that will make it far easier.

If nothing, once the system is warmed and your getting high temperature feel the rads. Make sure they are even in temperature as this could be a blockage if they feel hot in one place but cooler in another.
 
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