Average 5090 Core Temps with Core block, TUF 5090

[Slight.oce]

Hi all,

Question in regarding my core temps on waterblock 5090. With water temp at ~32 degrees, my core temp at ~320w of normal 1440p load sits at around 50-52 degrees. I originally had Apex paste, which I swapped for LM which only made a degree or two of difference. If I load the GPU on Furmark this temp increases to 65c - honestly expected a little better.

Does anyone else seem to have this issue? What are everyone’s 5090 temps looking like? Is it possibly due to poor contact due to incorrect thermal pad sizing? Memory temps are great.

Or potentially flow? I have 1 x D5 next (runs at 100% at 32c), running 3 x rads (2 x 360 and 1 x 420), with a CPU and RAM block in the loop as well, only with 3 x pairs of QDCs.

Thanks in advance.

Edit: I think I may have the inlet and outlet mixed up

 

[Slight.oce]

While I’m here though, how do the pads look?

 

[Eddy]

If you mixed up IN and OUT, you will lose cooling performance. The pads look good, but is there a pad missing at the very back? Or is it sitting on the GPU? The rear section is also intended to cool the rear voltage converters.
Please also check the 4 spacers around the GPU and make sure the thermal pads do not get caught between them when tightening the screws. If necessary, cut them back a little.
The thermal paste imprint looks a bit like the mounting pressure is not quite correct. Tighten these 4 screws fully first before fully tightening the others. We have found that sometimes it can even be better to tighten them clockwise instead of in a cross pattern, as would normally be recommended. It seems the thermal paste is distributed a little better by the pressure that way than with a cross pattern. However, this does not always help.

 

[Slight.oce]

If you mixed up IN and OUT, you will lose cooling performance. The pads look good, but is there a pad missing at the very back? Or is it sitting on the GPU? The rear section is also intended to cool the rear voltage converters.
Please also check the 4 spacers around the GPU and make sure the thermal pads do not get caught between them when tightening the screws. If necessary, cut them back a little.
The thermal paste imprint looks a bit like the mounting pressure is not quite correct. Tighten these 4 screws fully first before fully tightening the others. We have found that sometimes it can even be better to tighten them clockwise instead of in a cross pattern, as would normally be recommended. It seems the thermal paste is distributed a little better by the pressure that way than with a cross pattern. However, this does not always help.

Thanks for the reply. Yeah a couple of the pads were left on the GPU, I’m away from home at the moment and this was the only photo I had of the pads.

Once I’m home again in a few weeks I’ll remove it and re-orientate inlet/outlet and see how I go. I’ll pull the plate off again and recheck the pads again etc as well. When you say make sure the pads aren’t caught in-between the spacers, you mean like the below?