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How much of an impact can replacing thermal paste in a GPU do? - Page 2

post #11 of 78
dlewbell thank you, then this thread is not needed to go further.
With OP case the problem was never the GPU, it is the case with no intake and limited 92mm exhaust.
The case needs to be replaced with one that supports good airflow.
NZXT S340, Phanteks P400, Phanteks Pro M, Fractal Define S, Corsair 400C. These case would be what you want to look for.

    
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post #12 of 78
Quote:
Originally Posted by Sp33d Junki3 View Post

dlewbell thank you, then this thread is not needed to go further.
With OP case the problem was never the GPU, it is the case with no intake and limited 92mm exhaust.
The case needs to be replaced with one that supports good airflow.
NZXT S340, Phanteks P400, Phanteks Pro M, Fractal Define S, Corsair 400C. These case would be what you want to look for.


Or just leave the side off
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post #13 of 78
Yup with no intake fans the bottom of the case near the video card would get no airflow at all really.
Grab a good Micro ATX case would fix that completely!



I just helped a friend transfer the guts of an HP system to the Fractal Design - Core 1300, it dropped his GPU temps almost 25C!! Before the install he was hitting around 88-90C. We also added a 2nd intake 120mm Fractal fan to match the pre-installed one.

http://www.fractal-design.com/home/product/cases/core-series/core-1300

One thing to note with this the motherboard only had a fan header for 1 case fan... the front fans we had to connect to the PSU so they run at full speed. Thankfully the fractal silent fans were very quiet even at full tilt.
post #14 of 78
Thread Starter 
Quote:
Originally Posted by dlewbell View Post

For reference:
OP has the EVGA GTX 960 SC 4GB in a restrictive case (Dell OEM) & 30C+ ambient last I heard. (See this thread)
I have the same card in a much more open case & 21C ambient.

I was just thinking about your setup yesterday. I started trying to OC my card. EVGA GTX 960 SC 2GB, single fan. So far I've come to the conclusion that I have no idea what I'm doing. I struggled to make any progress performance wise, & am considering making a thread to ask for help with it. I did start playing around with the fan speeds, & like you found that 45% fan speed (1700 RPM) was the max I would tolerate, & I got a 14C temp drop (from 75C to 61C) running Furmark in that situation vs the default of 28% (1050 RPM). I'm guessing that replacing the thermal paste won't help much. I've considered doing the same, but I assume a newer EVGA card already has decent paste, & that our cooler is just too small. If you go for it, let me know what results you get.

Damn man, I feel absolutely terrible. You dropped a whole 14C increasing the fan speed to 45%, and here I am still hitting 80C with that fan curve! Without the temperature limit in place at 80C, I'd probably be hitting 85C or more. So my situation is just downright terrible. I didn't realize it was this bad.
post #15 of 78
Thread Starter 
Thing is with the side off, I max out at around 78C running Furmark, still way higher than the 61C the other user here posted when running a 45% fan curve. I'm just at a loss for this huge discrepancy.
post #16 of 78
Thread Starter 
Quote:
Originally Posted by dlewbell View Post

For reference:
OP has the EVGA GTX 960 SC 4GB in a restrictive case (Dell OEM) & 30C+ ambient last I heard. (See this thread)
I have the same card in a much more open case & 21C ambient.

I was just thinking about your setup yesterday. I started trying to OC my card. EVGA GTX 960 SC 2GB, single fan. So far I've come to the conclusion that I have no idea what I'm doing. I struggled to make any progress performance wise, & am considering making a thread to ask for help with it. I did start playing around with the fan speeds, & like you found that 45% fan speed (1700 RPM) was the max I would tolerate, & I got a 14C temp drop (from 75C to 61C) running Furmark in that situation vs the default of 28% (1050 RPM). I'm guessing that replacing the thermal paste won't help much. I've considered doing the same, but I assume a newer EVGA card already has decent paste, & that our cooler is just too small. If you go for it, let me know what results you get.

What exactly was your fan curve in that modified situation? Was it 45% at 61C, or 41% at 80C with lower actual fan speeds at 61C?
post #17 of 78
Quote:
Originally Posted by hsjj3 View Post

Thing is with the side off, I max out at around 78C running Furmark, still way higher than the 61C the other user here posted when running a 45% fan curve. I'm just at a loss for this huge discrepancy.
I really think the difference comes down to a combination of differences in ambient temperature & possibly some manufacturing variability. What was your actual room temperature during your latest Furmark run? Subtract 23C (my case temps today) from that & see if it is close to the difference. If you're now getting to 78C in Furmark with the door off, you've made some real progress. That means you're NOT hitting the thermal throttle point anymore. You can run with the case like that long term, modify it to improve airflow, or replace it with a nicer one. Beyond that, unless you cool the room it's in, you're unlikely to get much cooler without either ramping up the fan or buying a better card or cooler (assuming they even sell one for our cards). The easiest thing to do might be to bump it to 60% fan speed & wear headphones.biggrin.gif

Back to the original question of the post:
How good is the EVGA thermal paste? If I replaced it with either Thermaltake TG-7 or Phanteks PH-NDC (what I have on hand), would I have a chance of seeing better temperatures, or am I just as likely to make it worse?
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post #18 of 78
Quote:
Originally Posted by hsjj3 View Post

What exactly was your fan curve in that modified situation? Was it 45% at 61C, or 41% at 80C with lower actual fan speeds at 61C?
I just set it to a constant 45% for the 61C run. I've since made a gradual curve that leaves me running 64C at slightly lower fan speeds. If you want specifics, I'll check it for you in the morning.
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post #19 of 78
Thread Starter 
The curious thing is, when I played around with fan speeds is that, only when I put a 70% fan curve do I stop hitting the 80C limit. So it would top off at 77C with around 66% speed at that point.

And, to be honest, when I increased the speed to 45% from the default max of 37%, I didn't actually see any notable decrease/slowdown in temperatures.

Maybe, the GPU is only capable of bringing in fresh air from outside the case by itself once it gets above a certain fan % threshold? I don't know.
post #20 of 78
Thread Starter 
Quote:
Originally Posted by dlewbell View Post

I just set it to a constant 45% for the 61C run. I've since made a gradual curve that leaves me running 64C at slightly lower fan speeds. If you want specifics, I'll check it for you in the morning.

Alright, later today I will check by running Furmark on stock settings with a constant 45% fan speed with one side of my case open and see where it maxes out.
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