MarcSam
Good morning guys, first of all thank you for your responses. I would like to give you a little update.
 
I teared down the block and the paste spreading was pretty good actually and took me a bit of force to separate the block from the gpu pcb as the suction force wasn't weak.
Once cleaned everything I reassembled the block and tightened the screws a bit more to what I've done initially just in case. I checked the gpu block and no air bubble can be seen.
 
I fired up superposition and again the temperature started to climb up but very slowly so it means that there's good contact between block and gpu pcb but still at the end of the benchmark I passed the 60°C mark. Then and I ran a port royale stress test (20 loop runs of 1 minute and 50 sec each) and the gpu still topped up at 71 °C at the end of it with power slider set to 113%.
 
I mean this is way better than the stock cooler but I expected a bit more honestly, altough room temperature was 28°C (I live in south Italy).
 
Since it was asked here's my loop order: pump > 360 rad > gpu > cpu > 360 rad > back to the pump.
 
I suspect that the fans that I have are bottlenecking my loop, they are the Corsair QL 120. 3 of them at the bottom rad pulling air from outside to inside, and 3 of them at the top rad pushing air from inside to outside and extra 3 fan pulling air from outside to the inside of the case (so I have strong positive pressure). The case is the infamous Lian Li 011 dynamic xl. 
 

Yah 71 is a little high. You used this loop with your previews GPU or is this a new loop? The Corsair fans aren’t bad. What’s your pump speed?
You had thermal pads as all on top of all memory units and on tops of all power units?
And you put the correct size thermal pads?

Don’t worry about the loop order it doesn’t really matter, it’s the overall water temps that matters.


Here is a nice video that walk you through the installation. He messed up a few times but overall he did a good job: https://youtu.be/U7YtQfdSMGw

Mrostom

Yah 71 is a little high. You used this loop with your previews GPU or is this a new loop? The Corsair fans aren’t bad. What’s your pump speed?
You had thermal pads as all on top of all memory units and on tops of all power units?
And you put the correct size thermal pads?

Don’t worry about the loop order it doesn’t really matter, it’s the overall water temps that matters.


Here is a nice video that walk you through the installation. He messed up a few times but overall he did a good job: https://youtu.be/U7YtQfdSMGw

I used this loop with a previous gpu, a 1080 ti ftw3, and I never had any thermal issues so it should be strange that after I change the gpu evrything goes down all of a sudden. After I installed the 3080 Ti I also drained the loop and poured fresh coolant. I installed the waterblock and backplate according to EKWB instructions, so I put all the thermal pads needed in the backplate and in the waterblock.
 
As far as I'm reading online the corsair ql fans are not designed to work with anything really, they're just built for the look. My theory is that the fans are not pushing/pulling enough air so that the liquid temperature could be cooled down in time. I will put a thermal probe inside the pump/reservoir combo and run a stress test to check coolant temperature. 

Hey guys, 
Not sure if this is the right place to put this but I'm having trouble with my EVGA FTW3 Ultra 3090 and my EK water blocks. I feel like I'm going crazy. So far I've had 4 of these cards die on me after water blocking them with EK's block. I've been installing water blocks for a long time and I've never had issues like this before. The first time I followed EK's directions for both front and backplates to the T and blocked two cards in preparation for an nvlink bridge that I have yet to actually install. Both cards worked great for about 3 weeks and then one suddenly died. then about 3 days later the other died. I contacted EVGA who RMA'd the cards. I was even more careful blocking the new set, I noticed that the EK backplate didn't actually fully cover the VRAM set towards the back of the PCB so I added a strip of 1.5mm thermal pad so that it would make good contact.  I used 1.5mm because it's 0.5mm offset from where they tell you to put the 1mm pads. After triple checking my work I installed them into the computer and everything booted up and thanks to the additional thermal pad my memory temps dropped almost 10c. However, 2 weeks later....they both died. One first and the next about 24 hours later. 
 
After digging around on the internet the issue seems pretty common and I found this discussion. The info about the Rev. 1 water blocks was great but I verified that the water blocks I own have the new style stand offs so I'm not sure what could be up. I'm contemplating selling whatever EVGA sends me and my water blocks this time and switching to a different 3090 altogether. I really don't want to block them again and have them die on me again, it's super frustrating. Does anyone know if there's any official statements from either EK or EVGA on this topic? Or if anyone has determined this to be definitely a GPU or definitely an EK water block issue? To be honest I'm not sure what I'm looking to get out of posting here. Maybe some reassurance to give me the confidence I need to try a 3rd time? 

MarcSam

Mrostom

Yah 71 is a little high. You used this loop with your previews GPU or is this a new loop? The Corsair fans aren’t bad. What’s your pump speed?
You had thermal pads as all on top of all memory units and on tops of all power units?
And you put the correct size thermal pads?

Don’t worry about the loop order it doesn’t really matter, it’s the overall water temps that matters.


Here is a nice video that walk you through the installation. He messed up a few times but overall he did a good job: https://youtu.be/U7YtQfdSMGw

I used this loop with a previous gpu, a 1080 ti ftw3, and I never had any thermal issues so it should be strange that after I change the gpu evrything goes down all of a sudden. After I installed the 3080 Ti I also drained the loop and poured fresh coolant. I installed the waterblock and backplate according to EKWB instructions, so I put all the thermal pads needed in the backplate and in the waterblock.
 
As far as I'm reading online the corsair ql fans are not designed to work with anything really, they're just built for the look. My theory is that the fans are not pushing/pulling enough air so that the liquid temperature could be cooled down in time. I will put a thermal probe inside the pump/reservoir combo and run a stress test to check coolant temperature. 

You can try that your are the best judge since you can see it all.

However try to get a coolant temp sensor to see the coolant temperature.
Also check on the pump speed.
Let us know and I will be able to help you out as much as possible!

Mrostom
You can try that your are the best judge since you can see it all.

However try to get a coolant temp sensor to see the coolant temperature.
Also check on the pump speed.
Let us know and I will be able to help you out as much as possible!

I will definetely keep you up to date hopefully with a full detailed report with images and numbers.

MarcSam

Mrostom

Yah 71 is a little high. You used this loop with your previews GPU or is this a new loop? The Corsair fans aren’t bad. What’s your pump speed?
You had thermal pads as all on top of all memory units and on tops of all power units?
And you put the correct size thermal pads?

Don’t worry about the loop order it doesn’t really matter, it’s the overall water temps that matters.


Here is a nice video that walk you through the installation. He messed up a few times but overall he did a good job:

I used this loop with a previous gpu, a 1080 ti ftw3, and I never had any thermal issues so it should be strange that after I change the gpu evrything goes down all of a sudden. After I installed the 3080 Ti I also drained the loop and poured fresh coolant. I installed the waterblock and backplate according to EKWB instructions, so I put all the thermal pads needed in the backplate and in the waterblock.
 
As far as I'm reading online the corsair ql fans are not designed to work with anything really, they're just built for the look. My theory is that the fans are not pushing/pulling enough air so that the liquid temperature could be cooled down in time. I will put a thermal probe inside the pump/reservoir combo and run a stress test to check coolant temperature. 

It might be worthwhile to play with the fan directions. I had a similar arrangement and when I changed the fan directions so that the top rad was not pulling the hot case air through it I saw about a 10C improvement in my GPU temps. FWIW.

MarcSam
Good morning guys, first of all thank you for your responses. I would like to give you a little update.
 
I teared down the block and the paste spreading was pretty good actually and took me a bit of force to separate the block from the gpu pcb as the suction force wasn't weak.
Once cleaned everything I reassembled the block and tightened the screws a bit more to what I've done initially just in case. I checked the gpu block and no air bubble can be seen.
 
I fired up superposition and again the temperature started to climb up but very slowly so it means that there's good contact between block and gpu pcb but still at the end of the benchmark I passed the 60°C mark. Then and I ran a port royale stress test (20 loop runs of 1 minute and 50 sec each) and the gpu still topped up at 71 °C at the end of it with power slider set to 113%.
 
I mean this is way better than the stock cooler but I expected a bit more honestly, altough room temperature was 28°C (I live in south Italy).
 
Since it was asked here's my loop order: pump > 360 rad > gpu > cpu > 360 rad > back to the pump.
 
I suspect that the fans that I have are bottlenecking my loop, they are the Corsair QL 120. 3 of them at the bottom rad pulling air from outside to inside, and 3 of them at the top rad pushing air from inside to outside and extra 3 fan pulling air from outside to the inside of the case (so I have strong positive pressure). The case is the infamous Lian Li 011 dynamic xl. 
 

Need to know you're water temperature. My GPU for this block is +18-20C over water. So cooler eater is, better.

28C ambient is pretty warm. I have 3x radiators and my liquid is 35C with ambient around 23-24C.

So port royal stress test will be 35C + 20C = 55C

Ql120 fans do suck also. I have them and in a O11 XL

The 3080 Ti draws 100-150W more than a 2080 Ti so you have to think about that. What happens when you run fans all 100% with case fully open? If you're GPU temps are better then you know you either need better fans or one more radiator.

FlavorII
Hey guys, 
Not sure if this is the right place to put this but I'm having trouble with my EVGA FTW3 Ultra 3090 and my EK water blocks. I feel like I'm going crazy. So far I've had 4 of these cards die on me after water blocking them with EK's block. I've been installing water blocks for a long time and I've never had issues like this before. The first time I followed EK's directions for both front and backplates to the T and blocked two cards in preparation for an nvlink bridge that I have yet to actually install. Both cards worked great for about 3 weeks and then one suddenly died. then about 3 days later the other died. I contacted EVGA who RMA'd the cards. I was even more careful blocking the new set, I noticed that the EK backplate didn't actually fully cover the VRAM set towards the back of the PCB so I added a strip of 1.5mm thermal pad so that it would make good contact.  I used 1.5mm because it's 0.5mm offset from where they tell you to put the 1mm pads. After triple checking my work I installed them into the computer and everything booted up and thanks to the additional thermal pad my memory temps dropped almost 10c. However, 2 weeks later....they both died. One first and the next about 24 hours later. 
 
After digging around on the internet the issue seems pretty common and I found this discussion. The info about the Rev. 1 water blocks was great but I verified that the water blocks I own have the new style stand offs so I'm not sure what could be up. I'm contemplating selling whatever EVGA sends me and my water blocks this time and switching to a different 3090 altogether. I really don't want to block them again and have them die on me again, it's super frustrating. Does anyone know if there's any official statements from either EK or EVGA on this topic? Or if anyone has determined this to be definitely a GPU or definitely an EK water block issue? To be honest I'm not sure what I'm looking to get out of posting here. Maybe some reassurance to give me the confidence I need to try a 3rd time? 

Why don't you play it safe and put kapton tape everywhere around the standoffs? Maybe punch small holes so kapton tape can act as a barrier?

MarcSam
Good evening guys, I just installed the waterblock for my 3080 ti ftw3 and I'm upset with the temperatures. I hope you could help me sort this out.
 
When I run Superposition, gpu core temperature starts to slowly climbing up to a point where it reaches around 70 °C where in idle stays around 34° with a room temperature of about 27°C.
I have a custom loop with a CPU block for the 9900K, an EKWB vtx pump and dual EKWB 360 PE rads.
 
Thanks in advance.
 
 

70c is far too high with *720 Rads.....you either have air trapped somewhere, poor contact with GPU or your pump isnt running.
Are you getting extra ordinary high temp on your CPU as well...check that...
Try rocking your case from side to side and end for end (aggressively)...sounds like an air bubbled trapped somewhere ...perhaps in GPU....

MarcSam
Good morning guys, first of all thank you for your responses. I would like to give you a little update.
 
I teared down the block and the paste spreading was pretty good actually and took me a bit of force to separate the block from the gpu pcb as the suction force wasn't weak.
Once cleaned everything I reassembled the block and tightened the screws a bit more to what I've done initially just in case. I checked the gpu block and no air bubble can be seen.
 
I fired up superposition and again the temperature started to climb up but very slowly so it means that there's good contact between block and gpu pcb but still at the end of the benchmark I passed the 60°C mark. Then and I ran a port royale stress test (20 loop runs of 1 minute and 50 sec each) and the gpu still topped up at 71 °C at the end of it with power slider set to 113%.
 
I mean this is way better than the stock cooler but I expected a bit more honestly, altough room temperature was 28°C (I live in south Italy).
 
Since it was asked here's my loop order: pump > 360 rad > gpu > cpu > 360 rad > back to the pump.
 
I suspect that the fans that I have are bottlenecking my loop, they are the Corsair QL 120. 3 of them at the bottom rad pulling air from outside to inside, and 3 of them at the top rad pushing air from inside to outside and extra 3 fan pulling air from outside to the inside of the case (so I have strong positive pressure). The case is the infamous Lian Li 011 dynamic xl. 
 

It may be the GPU and nothing else. It's the same with CPU's. It prob just made the cut to be put in one.