This is actually a good call out. I have a 2080 ti FTW3 Ultra with the EK block. It is a VERY
tight fit. There is less than 1mm between the edge of the block and the side glass. I honestly didn't even discover this until I completed my build and tried to put the side glass on.
That moment was stressful, to say the least.
I believe this is one of the largest 2080 ti PCB's and it does fit with the EK block. It's just extremely close and if your card is not perfectly snug in the PCI-E slot, the glass won't close.
I just snapped a pic to try and demonstrate how tight it truly is. Believe it or not, there is a slight gap there...
The other issue with the EK block on the FTW3 PCB is that it's quite long. So unless I got creative with my pump mounting, I couldn't fit the GPU vertically. Even though I do have a vertical bracket for the 011 XL.
If I could do it all again, I'd have purchased a 2080 ti with the reference PCB as those have more GPU block options and the blocks are a bit smaller. But, the FTW3 + EK block does fit, nonetheless.