Which contact frame or backplate for LGA 1700 and Eisblock XPX Aurora Edge Acryl Black ?

[deadpixel]

I already have the Alphacool Eisblock XPX Aurora Edge - Acryl Black Digital RGB.
It is for an MSI Pro Z790-A WIFI DDR4 mainboard with I7 13700 K.

I read, that to prevent bending of the mainboard and / or cpu, a backplate and / or contact frame should be used.

Regarding backplates I found:

13071 Alphacool Core Backplate XPX/Eisbaer LGA 115X/1200/1700 Metall

Die Alphacool Core Backplate aus Metall für XPX, XPX Aurora, XPX Aurora Edge, XPX 1U, XPX Pro 1U, XPX Pro Aurora, Eisbaer, Eisbaer Aurora, Eisbaer…

shop.alphacool.com

and

13072 Alphacool Apex Backplate XPX/Eisbaer LGA 1700 Metall Full Cover

Die Alphacool Apex Backplate aus Aluminium wurde speziell für den Intel LGA Sockel 1700 entwickelt um die Kühlperformance der Alphacool Eisbaer AIOs…

shop.alphacool.com

Price difference is more than 100% between them but description indicates both do the same thing?
So what is the difference exept from the price?

Regarding contact frame:
If I use a backplate should I still get a contact frame? If yes, is there one in the shop that is compatible with my waterblock and the mentioned backplates?

 

[Vanzin]

HI,

The Core Version is the normal Backplate, which is also included in our products. The Apex Version is replacing the original Backplate and stabilise the motherboard much more to avoid the bending problem. If you can use a contact frame with our water blocks I can´t say, since we are not the manufacturer of it, we can´t say if you can mount our water block as intented.

 

[deadpixel]

Ok, thanks.