EK showcases an Active Backplate Cooling Solution at CES 2021 - Next Level Cooling
 

Make your GPU cooler by sandwiching it between two water blocks.

https://overclock3d.net/gfx/articles...085252311l.jpg

Read more about EK's Active Backplate Cooling GPU Water Block.

While it may reduce the overall PCB sag due to adding a thick metal layer on both sides, wouldn't it still increase the overall weight and just introduce more sag near the PCI slot itself? Don't forget the additional liquid being added that also increases weight from adding this backplate.