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Custom Watercooling loop - Instant temp jumps when under load ? - Page 4

post #31 of 57
Well on the one hand, if the video card memory isn't contacting the cooler, then yeah that's not good. EK is usually pretty good about matching their blocks to specific cards, because there are differences between different model cards from different manufacturers, so I'm assuming you have the correct one. I'm still not sure how poor memory cooling would affect the GPU or CPU temps though. It might make your deltas (water to chips) higher, since less heat captured by the loop would make the water temp lower, but memory doesn't contribute a lot of heat compared with the GPU or CPU.

On the other hand, I guess I'm a little bit confused as to precisely which temps you're unhappy with, or that aren't stacking up to your expectations. Your original post gave me the impression your CPU temps were the problem. Then there were a lot of comments about water temp--CPU heat is the biggest contributor to that. So is it the CPU or the GPU, or both, that you're concerned with? Lemme ask again: precisely what is different about this loop from the "other loops" you mentioned in your first post, that you're comparing it to? Are you talking about loop you have had, or were you talking about stuff that other people have posted?
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post #32 of 57
Quote:
Originally Posted by HeLeX63 View Post


https://www.youtube.com/watch?v=IOouolNpJi8

There you go, a crappy AIO gets 51C max, with 1 single fan and 120mm radiator. And here I am with a custom loop hitting upwards to 50-55C. In the video he changed the fan, and now he is getting 44C....

Hmmmmmmmmmmmm

That's an AIO for GPU only, compared with your loop which has the CPU also, right? Yes it's going to be different. And there are other variables such as ambient room temp, overclock, etc. And if it's not all precisely the same hardware, it's going to be different.
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post #33 of 57
Thread Starter 
Quote:
Originally Posted by threephi View Post

Well on the one hand, if the video card memory isn't contacting the cooler, then yeah that's not good. EK is usually pretty good about matching their blocks to specific cards, because there are differences between different model cards from different manufacturers, so I'm assuming you have the correct one. I'm still not sure how poor memory cooling would affect the GPU or CPU temps though. It might make your deltas (water to chips) higher, since less heat captured by the loop would make the water temp lower, but memory doesn't contribute a lot of heat compared with the GPU or CPU.

On the other hand, I guess I'm a little bit confused as to precisely which temps you're unhappy with, or that aren't stacking up to your expectations. Your original post gave me the impression your CPU temps were the problem. Then there were a lot of comments about water temp--CPU heat is the biggest contributor to that. So is it the CPU or the GPU, or both, that you're concerned with? Lemme ask again: precisely what is different about this loop from the "other loops" you mentioned in your first post, that you're comparing it to? Are you talking about loop you have had, or were you talking about stuff that other people have posted?

CPU temps are great. Aida64 sees it hit below 70C. That im not concerned with. I have over 1000mm of radiator space thats the concerning part. The fact that the memory chips didnt make contact before and the fact that 1 chip is still not making any contact at all is scary. If I was to add a 2nd GPU I wouldn't be suprised if it will hit 60C. At that point air cooling would perform better.

Ok here's another video: https://www.youtube.com/watch?v=MwQ4N8ogLl8

40C is he's max temp. How am I getting 15C higher ?
post #34 of 57
Thread Starter 
Quote:
Originally Posted by HeLeX63 View Post

CPU temps are great. Aida64 sees it hit below 70C. That im not concerned with. I have over 1000mm of radiator space thats the concerning part. The fact that the memory chips didnt make contact before and the fact that 1 chip is still not making any contact at all is scary. If I was to add a 2nd GPU I wouldn't be suprised if it will hit 60C. At that point air cooling would perform better.

Ok here's another video: https://www.youtube.com/watch?v=MwQ4N8ogLl8

40C is he's max temp. How am I getting 15C higher ?
Or is the answer to have a dual loop W/C system ?
post #35 of 57
You have your CPU in the loop too right? It's going to be different. And you have to have the same ambient air temp, and have _exactly_ all the same hardware including fans to make it a meaningful comparison. Stop watching those videos wink.gif

Some people like having it but IMO you don't need a dual loop. You have way more rad than you need and it should be cooling everything fine. It could be a number of things--maybe there's a bubble in a reservoir, or maybe your pump isn't pushing enough flow--have you looked into those?
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post #36 of 57
Thread Starter 
Quote:
Originally Posted by threephi View Post

You have your CPU in the loop too right? It's going to be different. And you have to have the same ambient air temp, and have _exactly_ all the same hardware including fans to make it a meaningful comparison. Stop watching those videos wink.gif

Some people like having it but IMO you don't need a dual loop. You have way more rad than you need and it should be cooling everything fine. It could be a number of things--maybe there's a bubble in a reservoir, or maybe your pump isn't pushing enough flow--have you looked into those?

Before I took the apart the block, I had bleed the air all out. Left the pump at 100% for about a week and all the bubbles in the CPU block and GPU block exited. 100% pump speed no longer made any trickling effect sounds and the fill port was left open for air to escape. This made absolutely no difference to cooling I found. At the moment my loop is full of air and yet I am getting slightly better temps with the new thermal paste applied.
post #37 of 57
Quote:
Originally Posted by HeLeX63 View Post


Before I took the apart the block, I had bleed the air all out. Left the pump at 100% for about a week and all the bubbles in the CPU block and GPU block exited. 100% pump speed no longer made any trickling effect sounds and the fill port was left open for air to escape. This made absolutely no difference to cooling I found. At the moment my loop is full of air and yet I am getting slightly better temps with the new thermal paste applied.

Dude you're being really confusing. "My loop is full of air" but you're getting better temps??? confused.gif
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post #38 of 57
And by the way, it is very possible to have a big nasty air bubble in your radiators if all you did is run the pump for a while. You need to dramatically tilt the case, lay it on its sides, and even turn it completely upside down if necessary, multiple times, to make sure all the air comes out when you fill it up.
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post #39 of 57
Thread Starter 
Quote:
Originally Posted by threephi View Post

Dude you're being really confusing. "My loop is full of air" but you're getting better temps??? confused.gif

Previously It is safe to say I had no air at all. I was getting 55C max temps.

Now (yesterday) I re-seated the block and had to drain the loop. I have more air in my loop now than I did before I drained it since I drained it 1 day ago... My temps are better than when they were before. In other words, air is not the problem at all. My temps are maxing at 52C now and not 55C and I have air in the system currently as it is still bleeding.
Edited by HeLeX63 - 3/20/17 at 7:13pm
post #40 of 57
Thread Starter 
Quote:
Originally Posted by threephi View Post

And by the way, it is very possible to have a big nasty air bubble in your radiators if all you did is run the pump for a while. You need to dramatically tilt the case, lay it on its sides, and even turn it completely upside down if necessary, multiple times, to make sure all the air comes out when you fill it up.

Yes I have done this yesterday, I tilted it many times on many angles, and alot of bubbles came out. I kept doing this until no more air would come out by tilting the case.
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