Watercooled GPU Problem - Help!

[Exentrick]

I recently watercooled my RTX 2080 Super with a heatkiller IV GPU block. (Also a 9700k in the loop). I've got a 4x120mm rad and the core temps on both the CPU and GPU are no problem. However... over 65c on my GPU, I start to get either artifacts or more often, crashes. This usually takes the form of a driver error of some sort, crashing me back to the desktop.This is my first time watercooling, so I'm a bit of a novice. I've attached all the thermal pads that came with the GPU block. The RTX 2080 Super (FE) came with a backplate, but I don't think it works with the waterblock. Do I need to buy the heatkiller backplate? Any thoughts on possible remedies would be appreciated.

 

Thanks

[yaop117]

Did you get a chance to test the card before watercooling it? Was it crashing before?
It's possible that you just have a bad card. At this point you might as well try reapplying the paste/pads on your GPU just to make sure you don't have a random Vrm getting too hot or something.

[TheGlenlivet]

Pull the block off and make sure it is making contact with the card, the memory especially.

[ddennis002]

55 minutes ago, Exentrick said:

I recently watercooled my RTX 2080 Super with a heatkiller IV GPU block. (Also a 9700k in the loop). I've got a 4x120mm rad and the core temps on both the CPU and GPU are no problem. However... over 65c on my GPU, I start to get either artifacts or more often, crashes. This usually takes the form of a driver error of some sort, crashing me back to the desktop.This is my first time watercooling, so I'm a bit of a novice. I've attached all the thermal pads that came with the GPU block. The RTX 2080 Super (FE) came with a backplate, but I don't think it works with the waterblock. Do I need to buy the heatkiller backplate? Any thoughts on possible remedies would be appreciated.

 

Thanks

65c is this at idle, gaming load ect? Did you remove the plastic from the thermal pads? To much paste on the bad mount of the cooler.

 

As @yaop117 stated the card could be bad, but sounds more like issue with cooling overall

I got a rtx 2070 and 2700x on a 360mm rad with low static pressure fans and OC'd and I don't see over 45c on the GPU and 75c on CPU full load after an hour of synthetic stress tests.

[Exentrick]

I had been running the card for a couple months with no problems on its stock cooling. 65c was at a gaming load. I'm going to have to wait a week or two before I have time to take apart my loop and try to remount it. Is it possible that it's just a pressure issue? I was hesitant to screw things in too tightly for fear of cracking the silicon.

[Kilrah]

Most likely the memory or VRMs not being cooled properly.