Alphacool Eisbär Pro Aurora 360 underperforming on LGA1700

Equit

New member
Dear people,

I have an Alphacool Eisbär Pro Aurora 360 on a Gigabyte Aorus Elite DDR4 running with a new Intel Core i7 12700k.
Before that I had it running with a Intel Core i5 12600k.
I had my doubts already with the 12600k, but now having the 12700k installed, I am getting absurd temperatures.
Here are some pictures I took after checking the mount after the first install on the 12700k:
98523BA5-5E3C-4349-9555-D245CC5CF14F.jpg
745E60DD-6375-4733-B78E-12DA2F2ED3DA.jpg

This was a paste with Grizzly Kryonaut

Because I thought it had something to do with the way I mounted it, I bought a new set of LGA1700 screws/washer/nuts/springs and the Alphacool Core Backplate XPX/Eisbaer LGA 115X/1200/1700 Metall.

Here's the mounting of the new backplate:
21A0857D-427C-42BF-9F63-3D84BF32D459.jpg


This is what I got after mounting the CPU cooler with some Alphacool Subzero:
78691F57-BBBE-4625-A46E-19C2F0258C72.jpg
0BC34E36-5192-4277-A41A-33B1633A6412.jpg
11DDC05C-7A58-4874-B820-2DF2FCCA78DF.jpg


These are temperatures that I am getting, idle it is fine, but under load it flies skyhigh:
F91EF36E-34B8-4A32-9627-BA72873A50EA.jpg


These are the Vcore voltages, which are more than within acceptable ranges:
C001137B-9FDA-4DBC-B2ED-0777083A51B7.jpg


I tried multiple pastes: Grizzly Kryonaut, Alphacool Subzero, Thermalright
Same results.
The pump is always running at 100% and I checked for airbubbels. Water is running fine.

The mount to the bracket is handtight.
This evening I'm going to check if the 12700k is domed or something. I already have the Thermalright LGA17XX-BCF correction socket lying around, but I'd rather use that when I'm recieving my new Gigabyte Tachyon board.
Also I am going to check with an aircooler to see for any differences in mounting.

I would like to receive some advise or helping hand, because after the stuff I mentioned here before, I really have no idea why the cooler is so underperforming.

P.S.
Here is a photo of the whole PC:
y4mstVIdFMf5K4eh0Pgrmjs4TOUuAbxCYYbLRiMuqsCzpApmvwtMviTvS9MocZqbFWaUnIbpPDqJrRS9iOVymN5q7domeey3Cupi7wp4PBO0fdSyIAZiha2aTSnhVP6LhIZMxup4BTVqiRyavJIryKcwJ-0FcdBdgmXSfHZJjBxlPtXKtuhYR9CHW9FUdLvCfMVvjX5TJ7wU79TcrN6LIrKoIB8b-zdTVcnwved8vr7kx4


With kind regards,

Equit
 

Eddy

Iceman
Staff member
The nuts that hold the screws on the mounting set, read the times away.
In general, you can clearly see that you can't get an even contact pressure on the CPU. This can be that the CPU is completely bent, so that the backplate no longer helps here, or that when screwing the cooler to the backplate, it slips a bit or the screws do not grip properly. Or that the screws were not tightened evenly. Always crosswise in alternation. And all screws so far purely screw, until the springs were almost completely compressed.

Based on the pictures, I can otherwise directly recognize no error. But after the impressions, it is in my opinion the wrong contact pressure.

Which of the thermal pastes you use is irrelevant by the way. The differences in thermal pastes are minimal and do not determine whether they are throtteless or not.
 

Equit

New member
Hi Eddy,

Thanks for your reply. For what I did was screwing the screws as far as they can go(can't go any further, because the crew thickens at a point).

I've been building pc's for over 20 years now, but this is the first time I'm having such trouble getting the mount right with a cooler.
I always screw crosswise in alternation. Perhaps i'll make a video this evening of the whole thing.

So things for me to do:
CPU to stock settings
Lose the nuts(for they can interfere with the motherboard)
Check for bent CPU IHS
Aircooler for reference
Make a video of the whole process

I'll come back when I have the footage/things checked uit.

Thanks again,

Equit
 

Eddy

Iceman
Staff member
Some hints I write by default because of course I don't know you and can't estimate your skills. Therefore, we describe everything so that even a complete novice can understand.

I'll wait for the feedback for now.
 
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