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post #7991 of 10494
Quote:
Originally Posted by ViRuS2k View Post

No sure how you guys are getting under 50c with your EK waterblocks but im suffering trying to get my cards under 50c load.
the watertemps in my custom loop just keep going up and up and up very very very slowly i might at...

i have 2x 1080ti`s ek blocks and back plates.
run them currently @ 2025/12ghz

water creeps its way up until it reaches about 46c
with card temps @54c
and running a single card without sli creeps up to about 49c

this is with 2x alpha cool radiators very thick ones 480mm on the top and 420mm on the bottom. with 1 ek pump. d5 @ 10 on the dial.


CPU is under the same loop @4.8ghz I7 haswell 4970k


I cant for the life of me figure out how to get my temps down to around low 40s. under load, once i get around that im planning on doing the shunt mod.


anyone have any suggestions ?
EK-XTOP Revo Dual D5 PWM Serial - (incl. 2x pump) i bought this thinking it might be my flow thats cauing the issues though yet to fit it.
i also have another 120 alpha cool monster radiator that i could fit
adding stuff is no issue as i have a 2000w super flower 8pack PSU in the system probably overkill lol but you can never buy cheap when buying psu`s....

gotta figure a way to lower these fluid temps.

About the only two things you can effect is fan speed and ambient temperature, if you can lower room temp it will help the most, but fan speed will help lower the delta between ambient and water temps. With the amount of Radiator you have I don't think a 120mm would make much difference at all. If your water temp is hitting 46c, that's insane as it should be 5c higher than room temp or thereabouts. Fan speed is probably the first place to start.
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post #7992 of 10494
Yep, as above. GPU delta to coolant temp is fine, suggests no problems with the block interface.

Your coolant temps are ridiculously high, unless it's like 36 degrees in the room. What are the fan configurations on those radiators?

Single D5 should be fine for that loop, I ran something very similar just fine on one - an additional pump will just add more heat to the loop.
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post #7993 of 10494
Quote:
Originally Posted by Nico67 View Post

About the only two things you can effect is fan speed and ambient temperature, if you can lower room temp it will help the most, but fan speed will help lower the delta between ambient and water temps. With the amount of Radiator you have I don't think a 120mm would make much difference at all. If your water temp is hitting 46c, that's insane as it should be 5c higher than room temp or thereabouts. Fan speed is probably the first place to start.

Thats under load though with the water temps... and the gpus are about 10c above watertemps at load.
at idle graphics cards are 25-27c with water temps currenlty at 27c...

you might be right about fans though they are pretty loud and dont push a lot but i was told with these radiators that you dont need pressure fans for them as the fins are not as compact... or dence....

might try adding another 4x 140 fans to both radiators

as currently the radiators are 480mm on top with 4x fans only in pull configuration
and the bottom rad has 3x 120 under the radiator in the pull configurations

no fans on the other side of the radiators

you might be right that im not getting the air out of the radiators fast enough hmm food for thought lol buy more fans tongue.gif

well guys i work nightshifts so i have to go now but i will check up on replys to any idea`s you guys have will also here is a video of my system, ignore the light show as i just got them at the time and need to configure them lol

though the video is with my 2x980TI`s though everything is the same apart from the cards replaced with 1080ti`s.....

https://www.youtube.com/watch?v=cAkbMr5VutY
or
https://www.youtube.com/watch?v=jL00kA7bQZ0

also the res is only half full, hahaha its completely full now smile.gif
Edited by ViRuS2k - 5/2/17 at 1:19am
post #7994 of 10494
Quote:
Originally Posted by ViRuS2k View Post

Thats under load though with the water temps... and the gpus are about 10c above watertemps at load.
at idle graphics cards are 25-27c with water temps currenlty at 27c...

you might be right about fans though they are pretty loud and dont push a lot but i was told with these radiators that you dont need pressure fans for them as the fins are not as compact... or dence....

might try adding another 4x 140 fans to both radiators

as currently the radiators are 480mm on top with 4x fans only in pull configuration
and the bottom rad has 3x 120 under the radiator in the pull configurations

no fans on the other side of the radiators

you might be right that im not getting the air out of the radiators fast enough hmm food for thought lol buy more fans tongue.gif

well guys i work nightshifts so i have to go now but i will check up on replys to any idea`s you guys have will also here is a video of my system, ignore the light show as i just got them at the time and need to configure them lol

though the video is with my 2x980TI`s though everything is the same apart from the cards replaced with 1080ti`s.....

https://www.youtube.com/watch?v=cAkbMr5VutY
or
https://www.youtube.com/watch?v=jL00kA7bQZ0

also the res is only half full, hahaha its completely full now smile.gif

Fans in Push are a lot more effective, never found fans on bothsides helped that much, but I'd wind them up as much as you can and switch them to push if possible, making sure to blow hot air out of the case smile.gif
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post #7995 of 10494
Quote:
Originally Posted by KraxKill View Post

The temperature where I am is actually quite nice today. The high for the day was 87F while the low is expected to be 57F tonight.

There is no need for insulation as my case is the insulator.

I've built a little mini Antarctica. It's a sealed air tight, or near airtight case and the air temps inside the case are at or near the temperature of the coolant being pumped through the loop. So there is no possibility for condensation.

I simply dial up the liquid temp I desire and the temp in the case drops to match that of the liquid.
Warning: Spoiler! (Click to show)



]

Quote:
Originally Posted by nrpeyton View Post

aww, I use a Dew Point & Relative Humidity Meter. Sometimes at night dew point goes down as low as 7 or 8c. So I'm able to run the Chiller that low with no condensation. (Meter is only 20 bux off Ebay).
Other days dew point is of course about 16c but it does change day-to-day.

They are really easy to modify for sub-zero. You just need to apply a little bit liquid electrical tape to the GPU and insulate your blocks/tubing with armaflex to stop air getting in (and condensation) and you can get as low as -14c coolant temp by bypassing the thermostat. I had great fun with mine.

It's currently disconnected. As after I modified it to run regardless of temperature (as soon as it was switched on at wall) I got annoyed having to periodically power it up/down every hour or so. (with PC idling it would actually take about an hour for temp to go from 16c to about 35-40c.

I got some great O/C'ing results on my last pascal as a result. 2300++ MHz ;-)

Can't wait to see what my TI is going to do. It's still sitting beside me now. I could have it reconnected to loop in 5 mins ;-)

A quieter model of compressor would be nice; I have to say.. the noise does get on your nerves eventually lol.


I had almost gone down the rabbit hole with you guys time restraints got the best of me and when the GTX1080 didn't respond well with the cold I sold my 1Hp condenser unit.
I will give you my final take of where I was heading you both obiously familiar with the Chill box
-Get rid of the water loop altogether every heat exchange was going to lose energy, pumps were always going to add heat to the loop. Large volumes of water are a pain in the butt to chill and insulate or even pump at sub zero
-replace the water blocks with custom made evaporator blocks
-and use a Precise controller the problem being that it would require 1 per GPU or CPU and multiple check valves but all doable and you can get readily made AC hose that would handle -40°C

or you could just get one of these chiller unit and build your own Chill box I always thought these units were a little under powered
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post #7996 of 10494
Quote:
Originally Posted by ViRuS2k View Post

No sure how you guys are getting under 50c with your EK waterblocks but im suffering trying to get my cards under 50c load.
the watertemps in my custom loop just keep going up and up and up very very very slowly i might at...

i have 2x 1080ti`s ek blocks and back plates.
run them currently @ 2025/12ghz

water creeps its way up until it reaches about 46c
with card temps @54c
and running a single card without sli creeps up to about 49c

this is with 2x alpha cool radiators very thick ones 480mm on the top and 420mm on the bottom. with 1 ek pump. d5 @ 10 on the dial.


CPU is under the same loop @4.8ghz I7 haswell 4970k


I cant for the life of me figure out how to get my temps down to around low 40s. under load, once i get around that im planning on doing the shunt mod.


anyone have any suggestions ?
EK-XTOP Revo Dual D5 PWM Serial - (incl. 2x pump) i bought this thinking it might be my flow thats cauing the issues though yet to fit it.
i also have another 120 alpha cool monster radiator that i could fit
adding stuff is no issue as i have a 2000w super flower 8pack PSU in the system probably overkill lol but you can never buy cheap when buying psu`s....

gotta figure a way to lower these fluid temps.

What's your ambient temperatures? that has possibly the biggest impact on your temperatures, more so than any other factor. Some members here live in very cold climates so they can get a free 5-10 degree boost on that alone.

The order of troubleshooting I'd do
1. check block seating + TIM application, this has a massive impact on temperatures.
2. check that fans are well matched to the rads, MagLev or Swiftech fans seem the best static pressure to noise, to CFM ratio. Also, fans are much much better at pushing air than pulling it.
3. check if flow is the issue, it should be with a single D5 because you have a lot of blocks and rads. Hot coolant seems to suggest the interface with the water to air is the bottleneck. Maybe check for blockages?
post #7997 of 10494
Quote:
Originally Posted by RMBR View Post

SLI 1080 ti FAIL!
Warning: Spoiler! (Click to show)
The Division

SLI 1080ti 78fps
http://www.eurogamer.net/articles/digitalfoundry-2017-nvidia-geforce-gtx-1080-ti-asus-strix-sli-review


SLI 1080 73fps


SLI TITAN X pascal 96fps



Wildlands.

SLI 1080ti 53fps

https://www.youtube.com/watch?v=k8GccmyfFzw

SLI 1080 54fps


SLI TITAN X pascal 69fps


Welcome to Overclock.net

That is normal for SLI and new titles I have been in the SLI boat before and you will find yourself checking for new drivers to update new SLI profiles to be created for newish games.

And @KedarWolf this could be useful for the OP 1080Ti cards roundup
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post #7998 of 10494
Quote:
Originally Posted by ViRuS2k View Post

Thats under load though with the water temps... and the gpus are about 10c above watertemps at load.
at idle graphics cards are 25-27c with water temps currenlty at 27c...

you might be right about fans though they are pretty loud and dont push a lot but i was told with these radiators that you dont need pressure fans for them as the fins are not as compact... or dence....

might try adding another 4x 140 fans to both radiators

as currently the radiators are 480mm on top with 4x fans only in pull configuration
and the bottom rad has 3x 120 under the radiator in the pull configurations

no fans on the other side of the radiators

you might be right that im not getting the air out of the radiators fast enough hmm food for thought lol buy more fans tongue.gif

well guys i work nightshifts so i have to go now but i will check up on replys to any idea`s you guys have will also here is a video of my system, ignore the light show as i just got them at the time and need to configure them lol

though the video is with my 2x980TI`s though everything is the same apart from the cards replaced with 1080ti`s.....

https://www.youtube.com/watch?v=cAkbMr5VutY
or
https://www.youtube.com/watch?v=jL00kA7bQZ0

also the res is only half full, hahaha its completely full now smile.gif

Lowering ambient temps as others have suggested could definitely help. I just used Kryonaut on my GPU with great results so far. My rad fans are push/pull on my GPU 480 mm rad at just 600-700rpm or so. Provided you have a good mount on your gpus, try increasing fan speed to see if that nets you anything. I know that I'm going to have to run A/c in my room this summer to be able to maintain the max 36c temps in seeing on my Ti. My dedicated GPU loop probably helps a bit too.
Edited by Bishop07764 - 5/2/17 at 6:11am
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post #7999 of 10494
Quote:
Originally Posted by ViRuS2k View Post

No sure how you guys are getting under 50c with your EK waterblocks but im suffering trying to get my cards under 50c load.
the watertemps in my custom loop just keep going up and up and up very very very slowly i might at...

i have 2x 1080ti`s ek blocks and back plates.
run them currently @ 2025/12ghz

water creeps its way up until it reaches about 46c
with card temps @54c
and running a single card without sli creeps up to about 49c

this is with 2x alpha cool radiators very thick ones 480mm on the top and 420mm on the bottom. with 1 ek pump. d5 @ 10 on the dial.


CPU is under the same loop @4.8ghz I7 haswell 4970k


I cant for the life of me figure out how to get my temps down to around low 40s. under load, once i get around that im planning on doing the shunt mod.


anyone have any suggestions ?
EK-XTOP Revo Dual D5 PWM Serial - (incl. 2x pump) i bought this thinking it might be my flow thats cauing the issues though yet to fit it.
i also have another 120 alpha cool monster radiator that i could fit
adding stuff is no issue as i have a 2000w super flower 8pack PSU in the system probably overkill lol but you can never buy cheap when buying psu`s....

gotta figure a way to lower these fluid temps.


When I put my waterblock on my TI somehow I was getting high temps. I have done this several times with previous cards. So I end up taking it back out of the loop and guess what? Somehow one of the clear backings from the thermal pads made its way onto the nickel block where it sits on the gpu's core. It was blocking the cooling path. I was idling fine in the 20s, but when a load was on it shot up into the 50's pretty much instantly. Ended up removing it. Temps dropped back to no more than 45c during long time gaming sessions. This is at 2050mhz too.

BTW I am running two 360mm GTS rads with a delidded i7 7700k @ 5ghz @ 1.285v in a Phanteks TG Evolv
post #8000 of 10494
Quote:
Originally Posted by Bishop07764 View Post

Lowering ambient temps as others have suggested could definitely help. I just used Kryonaut on my GPU with great results so far. My rad fans are push/pull on my GPU 480 mm rad at just 600-700rpm or so. Provided you have a good mount on your gpus, try increasing fan speed to see if that nets you anything. I know that I'm going to have to run A/c in my room this summer to be able to maintain the max 36c temps in seeing on my Ti. My dedicated GPU loop probably helps a bit too.

Is Kryonaut much better than what EK includes with their block? Tempted to try it on my GPU since many people since to be mentioning it in this thread. How much difference are we talking about in temps?
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