why not a sandwich of facing each other Motherboard and video card with a single heat sink or a water block in between.

I was lucky enough to test this case some time ago. Now with gpu support too, I might just buy one. Ryzen 1700 + GTX1060 all passive should be great. It's expensive AF, but it's kinda worth it imho.

Ah yes, the Mac Pro Square.

ppnwhy not a sandwich of facing each other Motherboard and video card with a single heat sink or a water block in between.

Because that would be an utter nightmare to mount (requiring screwing in both CPU cooler and GPU cooler from the back of the motherboard and GPU respectively), would lead to a whole host of component clearance issues (tall ram? capacitors on your GPU? Ports on your motherboard?), would make connecting anything to your motherboard after installing the cooler virtually impossible (need to connect a SATA cable? Cool, just remove the cooler from your CPU and GPU, please, and then repaste and reinstall when done), and would force heat from two sources into one heatsink (with all the hassle that brings with it)?

Apple could do this with the trash can Mac Pro due to the custom motherboard. The lack of updates to the platform shows how limited its cooling potential is, though. Not to mention that Apple does not care about serviceability or upgradeability, of course.

wotevajjjjI was lucky enough to test this case some time ago. Now with gpu support too, I might just buy one. Ryzen 1700 + GTX1060 all passive should be great. It's expensive AF, but it's kinda worth it imho.

While this can't keep up with a 1060 (at least without adding a fan or two somewhere), that would indeed be sweet. Here's hoping Calyos starts licencing out their flexible pump-less loop systems and we get some smaller, cheaper cases with that. Preferably as nice-looking as this. That would be amazing.