How much thermal paste on GPU?

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Freddysquiggles

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So I installed a custom water block recently and temps were super high and peaked 59C on my 1080ti. I was wondering if I needed to cover the entire gpu with thermal paste, I just drew an X on the dye but I don't think I got every square millemeter. Is it that important that I cover it fully?
 
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WildCard999
I can't speak for a full watercooled system as my GTX 1080 ti has a AIO cooler @41C during gaming with a 20C room temp. What's you room temp?

Like feelinfroggy777 said, you may of applied too much paste as that would cause higher temps. Try putting about a grain of rice sized amount and spread it with a credit or store card (semi flexible card) as thin as possible over the GPU then remount the cooler and check the temps.

Even if it does peak at 59C though it's nowhere even close to the max temp of that GPU (91C).
https://www.nvidia.com/en-us/geforce/products/10series/geforce-gtx-1080-ti/#specs
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Freddysquiggles

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Thanks for the replies, but how?! What pump and radiators do you use? Fan rpm? my fans max at about 1400 rpm and I run my D5 pump at 80% speed, My temps easily exceed 50C . I have 2 radiators, one 360mm and another 280mm, static pressure fans. Honestly I don't know what I might be doing wrong.
 
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WildCard999

WildCard999

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I can't speak for a full watercooled system as my GTX 1080 ti has a AIO cooler @41C during gaming with a 20C room temp. What's you room temp?

Like feelinfroggy777 said, you may of applied too much paste as that would cause higher temps. Try putting about a grain of rice sized amount and spread it with a credit or store card (semi flexible card) as thin as possible over the GPU then remount the cooler and check the temps.

Even if it does peak at 59C though it's nowhere even close to the max temp of that GPU (91C).
https://www.nvidia.com/en-us/geforce/products/10series/geforce-gtx-1080-ti/#specs
 
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feelinfroggy777

feelinfroggy777

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How much OC do you have? I have not upped my voltage at all and run a +150 on the base clock (I cant remember the memory). Even when I bump up my voltage I cant get a stable clock past 160. I am running SLI and I think one of my cards was a lottery loser, thus the reason why voltage wont give me any more mhz.

If you have a big OC with high voltage could be the cause for different temps.

As I said, your temps are high, but not so high that I immediately thing something is wrong. I have never used enough thermal paste to make on "X" on the die, so my best guess is you have used too much. I use the pea method and some people like the line method (never heard the rice grain analogy from above, but I like it). Your cooling system is more than adequate for one GPU and a CPU. It may be worth the trouble to reapply and use another method to see if you have better results.
 
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