GPU overheating

[Adnanklink]

I installed the Ek universal water block on 2x7870s and for some reason the top card is not being cooled by the loop. As soon as I start using the card the temperatures spike and continue to rise till it overheats (matter of secs) whereas the bottom card gets cooled correctly and reaches about 51 degrees after being run for a bit. I have no idea what is wrong right now and would appreciate some help/advice.

 

Also, I have reseated the block and made sure it was fastened correctly.

 

Adnan

[Praxis727]

Did you run that card before waterblocks?  Do you have a pic of your loop?

[Adnanklink]

Did you run that card before waterblocks? Do you have a pic of your loop?

I have been using the cards for several months with no issues.

[AMD Lover]

Do u have the hoses in the right hole in that GPU block connector, thats the only thing that i can think of because their routed pretty weird.

 

 

I assume u know the one GPU doesnt have the power connected?

[Adnanklink]

Do u have the hoses in the right hole in that GPU block connector, thats the only thing that i can think of because their routed pretty weird.

Its EK's parallel universal bridge connector. That's one of the possibilities they suggest.

[AMD Lover]

Its EK's parallel universal bridge connector. That's one of the possibilities they suggest.

Okay, im not that experienced in watercooling but figured id try to help.

[Adnanklink]

Okay, im not that experienced in watercooling but figured id try to help.

I assume u know the one GPU doesnt have the power connected?

Thanks anyway, I'm kinda stumped though. And yes I unplugged the overheating card so that I could use the working one.

[airdeano]

I installed the Ek universal water block on 2x7870s and for some reason the top card is not being cooled by the loop. As soon as I start using the card the temperatures spike and continue to rise till it overheats (matter of secs) whereas the bottom card gets cooled correctly and reaches about 51 degrees after being run for a bit. I have no idea what is wrong right now and would appreciate some help/advice.

 

Also, I have reseated the block and made sure it was fastened correctly.

 

Adnan

 

sounds like you have a large immovable air bubble/pocket. some tilting and jarring of

the case with system off and pump on to help dislodge the air trapped. because the

way it is routed the pump>top GPU>bottom GPU>radiator>pump will not allow the air

to travel up (air always wants to go up) because the coolant is doing down.

turn the case on its roof and cycle to pump (any air is in the rad) as not to suck any

air out of radiator.

 

[Praxis727]

I agree sounds like an air pocket.

[Prophet of Entropy]

parallel flow depends on equal restriction in the blocks and an air pocket adds restriction from surface tension.  so yea, air pocket. 

 

you probably could have just as easily gone with serial flow since EK blocks are so low restriction, even with it being an expanded AIO.

[Leonard]

I installed the Ek universal water block on 2x7870s and for some reason the top card is not being cooled by the loop. As soon as I start using the card the temperatures spike and continue to rise till it overheats (matter of secs) whereas the bottom card gets cooled correctly and reaches about 51 degrees after being run for a bit. I have no idea what is wrong right now and would appreciate some help/advice.

 

Also, I have reseated the block and made sure it was fastened correctly.

 

Adnan

Did you use heatsinks for the mosfets and RAM? You also don't seem to have any air flowing to the cards, with universal blocks and depending on your specific GPU, you would need that cool air to flow over the card like how the stock cooler would do. Is the waterblock installed properly?

[Adnanklink]

Did you use heatsinks for the mosfets and RAM? You also don't seem to have any air flowing to the cards, with universal blocks and depending on your specific GPU, you would need that cool air to flow over the card like how the stock cooler would do. Is the waterblock installed properly?

I did put some heatsinks on the ram and vrm. Ek specifically says to run in parallel as those blocks are only meant to let water flow one direction. Lastly, there is another 240 rad for the front, but I had to rma it. It was setup with push pull sp120 fans so there were fans practically at the end of the cards. I have to wait for the rad though before I put them back.

[Leonard]

I did put some heatsinks on the ram and vrm. Ek specifically says to run in parallel as those blocks are only meant to let water flow one direction. Lastly, there is another 240 rad for the front, but I had to rma it. It was setup with push pull sp120 fans so there were fans practically at the end of the cards. I have to wait for the rad though before I put them back.

There could be an air bubble in the sli bridge.

[Adnanklink]

sounds like you have a large immovable air bubble/pocket. some tilting and jarring of

the case with system off and pump on to help dislodge the air trapped. because the

way it is routed the pump>top GPU>bottom GPU>radiator>pump will not allow the air

to travel up (air always wants to go up) because the coolant is doing down.

turn the case on its roof and cycle to pump (any air is in the rad) as not to suck any

air out of radiator.

 

 

I agree sounds like an air pocket.

 

 

parallel flow depends on equal restriction in the blocks and an air pocket adds restriction from surface tension.  so yea, air pocket. 

 

you probably could have just as easily gone with serial flow since EK blocks are so low restriction, even with it being an expanded AIO.

 

 

There could be an air bubble in the sli bridge.

I finally got around to messing with it and you guys were flippin' RIGHT!!! Thank you very much, this is why I love this community!

[Leonard]

I finally got around to messing with it and you guys were flippin' RIGHT!!! Thank you very much, this is why I love this community!

Your welcome, this is one of the reasons why i love this community too.

[MontBlanco]

I also too once have this problem on my CPU block. Next time if this occured again, shaking the case in all 4 directions and turning the speed of the pump will help a lot.