3rd party aio cooler

[remco23]

I have the OMEN 40L Desktop GT21-1047nd. I wanted to upgrade to a aio cooling from nzxt. All in all everything removed etc en placed in place. And in the end the The short side of the AMD standoffs is the only side that fits into the motherboard backplate. Unfortunately it's also the only side that fits into the thumbscrews. The longer thicker side of the standoff doesn't fit into the backplate nor in the thumbscrew. When I ask nzxt they say the long side should fit in the motherboard. How can I fix this? Are there any backup backplates for my am5 socket which are compatible?

[Bill_To]

Greetings @remco23   

We meet up again.

I'm not following the problem you are having.

I 've been using NZXT AIO CPU coolers on AMD AM4 and AM5  MBs since 2020.

I just did a Kraken Elite 240 RGB on an AM5 MB. The AM5 MB backplate is not to be removed as it secures the CPU locking mechanism to the MB.

The NZXT CPU coolers I have installed use the AMD MB backplate to secure the CPU water block to the MB.

You change the mounting bracket attached to the NZXT liquid cooling block (the default bracket is usually the Intel square bracket) to the AMD rectangular bracket.

Now the NZXT CPU bracket mounting points should align with the rectangular AMD backplate mounting points.

Regards

[remco23]

Hey. Thanks for helping. 
the square fits perfectly with the assigned “holes”. But when I want to put the screws in they are too thick to go in. And it doesn’t fit. When I ask nzxt they say it might be cause of that I have an omen prebuilt and it doesn’t allow third party aio coolers. They said I should ask ho for a new backplate or something. I don’t know how this works and all but for me it sounds strange. 

[Bill_To]

Greetings @remco23 

My pleasure.

I install Krakens in retail MBs so I can't know what HP is doing without examining the backside of your HP MB.

HP does proprietary stuff on some PCs but Omen PCs are usually easily upgradable.

I messed up in the previous response. HP uses the Intel mounting system on AMD MBs.

Have you tried NZXT's intel mounting hardware?

The catch may be you need access to the back of the MB so you can remove the HP MB CPU backplate. 

Now use the NZXT Intel CPU backplate.

The NZXT mounting hardware should work if you use the NZXT Intel MB backplate provided by NZXT.

Regards

[remco23]

there are two problems with the intel mount: 1. with the MB backplate the cooler doesn't reach the CPU. 2. the NZXT mount doesn't allow the CPU mount to be secured to the backplate

[Bill_To]

Greetings @remco23 

Sorry to see this.

I am not familiar with your PC's MB and I am not clear what HP has done concerning the CPU socket mount points to install an air cooler or liquid CPU cooler.

Is the HP MB using the square Intel mounting points around the CPU socket? Or is HP using the rectangular AMD cooler mounting system? 

Did you try the NZXT Intel backplate if HP is using the square Intel CPU cooler mounting system?

This sounds like a "Z" axis problem if the NZXT Intel backplate fits but you cannot secure the CPU pump/water block to the backplate and/or the CPU cooler cold plate does contact the CPU IHS. The AMD CPU would have a different height when compared to the Intel CPU.

It looks like you will not be able to install the NZXT AIO liquid cooler if HP has done such modifications to the MB layout.

You would need a HP AIO CPU liquid cooler designed for your modified AMD MB having the correct CPU mounting kit.

I would have no idea what this HP part number (AIO CPU liquid cooler) would be.

Maybe a different Forum member can help.

You would not have this problem if HP used the standard AMD fixed backplate and the AMD rectangular CPU cooler mounting system.

Regards

[remco23]

 the HP MB uses the intel mounting points. 
the problem is that the AMD standoffs don't fit in the cooler mounting holes of the MB backplate, because the side that should fit in is too thick. The NZXT backplate can't secure the CPU mount

the Intel standoffs do fit in, but are too long so the cooler doesn't reach the CPU

[Bill_To]

Greetings @remco23 

Thanks for the image.

HP is using a hybrid CPU cooler mounting system (Intel mounting points with an AMD CPU socket "Z" axis height differential) on your AMD MB.

NZXT and all other CPU cooler manufacturers I am familiar with provide either: an Intel cooler mounting system or an AMD cooler mounting system.

I am not aware of any way to solve this problem other than seeing if HP has a AIO CPU Liquid cooler which will work with your MB's Intel CPU mounting points and the AMD CPU socket.

Regards