Putting GPU on the PC case

[Memich]

Can I put a GPU on my PC case, backplate would touch the case. Like this:

If pic isn't loading here is the link:
https://m.imgur.com/vA9mmAr

Is this safe for components? No more space inside because two more GPU's are attached.

 

[clutchc]

As long as there are no exposed circuits on the back of the card.
Btw, what would be the purpose of doing that since you say you already have gfx cards in the existing PCIe slots?

 

[Memich]

As long as there are no exposed circuits on the back of the card.
Btw, what would be the purpose of doing that since you say you already have gfx cards in the existing PCIe slots?

I've already solved it, put a piece of wood under as isolation.

It's for Ethereum mining - cryptocurrency similar to Bitcoin.