Nice looking project

Ya, the cable management is amazing.  So you made the 3090 KPE AIO coolant tube management arms with CNC?  Looks great. 

This is one of best builds I've seen in 2024 so far.

black ice
Thank you very much for kind words.
 
Unfortunately after two years my 3090 KPE has a serious problem with the operation of the AIO pump.
Pump is very noisy, extremely loud... I can hear it from a distance of several meters.
I'm afraid this is the end of its life.
 
I reported this problem to support and...
 
"Upon reviewing the received images, I noticed that the hose pipes of the radiator are currently positioned facing downward,
below the graphics card. 
The hose pipes of the Radiator are facing down and below the Graphics card per the received image.
It is advisable to mount the radiator above the graphics card, with the hoses on the lower side/ facing down.
This arrangement helps prevent the accumulation of air pockets and ensures optimal performance."
 
Please give me your opinions.

 
The Kingpin & cavitation of the pump
 
Your setup would require any trapped air in the AIO pump to be pushed down hill to reach the radiator .... as air only wants to rise in a liquid, your asking a lot of the pump, once air gets into the pump it wants to stay there.
 
The fix will probably involve:


1) Remove radiator & hold the radiator hose end above center line of GPU, lightly shake the radiator & run the pump (I would disconnect power to the fans for finger safety)  You do not need to start the PC if you use an aux PSU to power the pump.  If the trapped air is stubborn, then several short stop/start cycles may help dislodge the air pocket.
 
Once the pump is clear .... carefully place the radiator back where it was, do not lower the radiator more than absolutely necessary & do not lay it flat, you want to keep any airaway from GPU side "trapped in the end of the radiator farthest from the hoses"-- It might even help if you tip the case back on to the back, almost laying flat on the I/O ports of the case -- keeping the top of the radiator as the highest point in the loop, when reassembling.
 
2) You could try short start/ stop cycles, then run the pump & tip the PC case also; if removing the radiator is too much work.  This is a less effective way & might not work.  When tipping the case, just remember air always want to rise in the liquid.

- Try tipping so I/O ports are down &/ or with far side of case (non GPU side) almost flat.  The radiator hose farthest from the open side in the picture, should be the suction side of the pump - keep it as the low point so your less likely to pull air towards the pump.
 
When running the pump, the PC just needs to be On, so even the BIOS screen is good.  I'd prefer to just use an aux PSU & only power the pump.
 
 

Is RMA or parts still an option through EVGA?  Is yours still under warranty?
 
If not, let me know.  I have a spare 3090 KPE AIO.

Several of your pictures shows the radiator laying on the Wrong side (photo below), turn radiator onto the opposite side for the suction hose to be on the bottom.  Your pictures with hoses on the bottom is the preferred way to mount radiator.
 
If your GPU is under warranty, then yes RMA is always an option. 

The bigger question is does EVGA have any of these cards in RMA inventory to send you?
 
One of my Hybrid cards is the 3090 Ti Kingpin hybrid, no issues with pump on any of them

 
This older build of mine shows the correct way to mount a radiator, if you need to place the hoses on the side (suction side of pump down)
 

EVGA no longer does cross shipping.

THX
Previously I used this solution in the Hexgear R80... twice.