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Are these temperatures normal?

post #1 of 14
Thread Starter 
Hi,

I currently have this cooling setup:

ASUS Maximus IX Formula (built in water block)
Intel Core i7 6700K @ 4.4Ghz at 1.275 (EKWB Supremacy EVO)
2 x GTX 980 Ti SC @1450 Mhz (EKWB Titan Water blocks)
2 x HWLabs Nemesis 480 GTX (Top/push & Bottom/pull)
Using Fractal Design Venturi HP12 fans on rads (600 RPM idle, 800-900 RPM on load)

After 2-3 hours of gaming my GPUs settle around 57C for the top and 51C for the bottom card.
My water temperature is about 42C at least, which is about 15C DeltaT

Are these temperature within what is expected for dual 480 rads?
post #2 of 14
Hi there

What is yours ambient temperature?
Ahh I see yours water delta is 15°C with water temp at 42°C which is bit hot for my liking, but really depends on yours location

Did you tried to run faster fans if this does lower temps under load?

These fans not sure if I would use for radiator, there are few good radiator fans, would recommend have look on Thermalbench.com

This delta is bit high for two 480mm radiator,running 360mm 60mm/240mm 60mm with three GPU (2*GTX1080,Titan X SC Maxwell) and in rendering my temps per GPU are under 40's(hottest card is top GTX1080 at 36-38°C, second GTX1080 usually sits at 32-36 and Titan X SC Maxwell sits at 32-33 °C) with ambient around 23-25°C although my fans are running faster, top ones are running at 1200-1300RPM with delta 4-5°C and bottom running at 1100RPM

Hope this helps

Thanks, Jura
     
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post #3 of 14
That top card is a bit hot. Those gpus should run within 8-10c of your water temp. My 980tis with EK blocks did and my TXPs with EK blocks do as well.

For those fan speeds those water temps seem fine but it is hard to know for sure without your ambient temp posted.
    
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post #4 of 14
Thread Starter 
My Room temp is approximately 26-27C,
Running fans at 1200RPM I get 51C/44C on GPU, water was about 36C

Also I've swapped them the top card is hotter by same amount, they are connected by parallel 3 slot bridge.
post #5 of 14
It looks like your top card don't have good contact with the waterblock or too much thermal paste. I suggest remount / reapply thermal paste. 2 Gpus run in parallel usually are within 1-2 C to each other.
post #6 of 14
Thread Starter 
I mentioned that I swapped top/bottom GPU and see same temps.
Also left the Heaven to run for like 2.5hrs and got to 39.5C water on 1200RPM

GPUs got to 54/49
Also GPU temp gap might be explained that heaven is not constantly using 99% on both, 2nd card usage drops down to 80-90 freequently

Tested without SLI enabled:

48C on Top card 33C on bottom card. water was around 33C at 1200 rpm
Edited by InhexSTER - 4/19/17 at 9:11pm
post #7 of 14
If the temp issue is always with the top card even when you swap them its not a mounting issue with the blocks.

Might be a flow issue for the upper card. What pump and speed are you running it at? No air bubbles in the block?

Maybe try the cards in serial instead of parallel to see if that does anything for the temps.

If the GPU load difference concerns you use a different stress test that hits both at 99% load for the duration of the test. It won't make a difference though.
    
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post #8 of 14
Guys the answer is simple, the ambient is warm to say the least haha. Guessing no AC either?

Hot ambien doesn't help water temps at all, in this regard air cooling does do it better. Figure out what your max wattage is and check what the dissipation is for those rads (guesstimate of around 800w maybe lower at those fans speeds with a delta of 10°C)

If you have high fpi fans you need high static pressure fans, running em at low rpms won't move much air and it will just sit there, as evident by you upping the RPMs and dropping water temp by 6°C (quite a lot btw)
    
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post #9 of 14
Thread Starter 
I am using D5 at 50% (2450 rpm) on idle and 75% on load (3850 rpm) though it doesn't make any significant difference.

The ambient sucks, I do have AC but it not cooling every room evenly. Condo I live in is weird, I have higher temps on the floor then ceiling measured by laser thermometer gun. Sometimes the difference is like 2C.

I am thinking that at 800 RPM those rads probably dissipate ~300W

I looked at this, which is from review of 480GTX but not Nemesis model, :



Didn't find review with good stats for 480 version, but here is 360 GTX for Nemesis:



Which shows about <200W for 750 RPM,

Another review for 480 GTX Nemesis shows load with 4770K + 780 TI with delta of 14.5C @ 800 RPM

http://thermalbench.com/2015/01/05/hardwarelabs-black-ice-nemesis-480gtx/5/

So, my system is drawing about 600-650W from the wall from what I could measure.

I feel like I should be seeing somewhere around 10C DeltaT with 2 of the rads, I have an option of adding another 360 in my case.

Basically I don't care as much about GPU temp as it's not limiting my OC on it, I more concerned about high DeltaT
post #10 of 14
Quote:
Originally Posted by InhexSTER View Post

I am using D5 at 50% (2450 rpm) on idle and 75% on load (3850 rpm) though it doesn't make any significant difference.

The ambient sucks, I do have AC but it not cooling every room evenly. Condo I live in is weird, I have higher temps on the floor then ceiling measured by laser thermometer gun. Sometimes the difference is like 2C.

I am thinking that at 800 RPM those rads probably dissipate ~300W

I looked at this, which is from review of 480GTX but not Nemesis model, :



Didn't find review with good stats for 480 version, but here is 360 GTX for Nemesis:



Which shows about <200W for 750 RPM,

Another review for 480 GTX Nemesis shows load with 4770K + 780 TI with delta of 14.5C @ 800 RPM

http://thermalbench.com/2015/01/05/hardwarelabs-black-ice-nemesis-480gtx/5/

So, my system is drawing about 600-650W from the wall from what I could measure.

I feel like I should be seeing somewhere around 10C DeltaT with 2 of the rads, I have an option of adding another 360 in my case.

Basically I don't care as much about GPU temp as it's not limiting my OC on it, I more concerned about high DeltaT

From the wall is a good measurement but doesnt take into consideration efficiency lost so could be a bit higher then 600-650.

For example my r7 1700x at 1.2v and r9 390 at stock clocks with a 360 and 240 i get a water delta of around 7-8°C (i measure ambient as inside the case temp as thats where my rads pull air from, core x5 with 3 intake temps up top and my 360 in push/pull pulling air from the case, the 240 is in push also pulling air from the case) both rads exhaust air OUT so they are not sucking up warm case air.
    
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