Mini-ITX is a small form factor (SFF) standard for motherboards and computer cases that was developed by VIA Technologies in 2001. Its main purpose was to allow for compact and space-efficient ...

So far all the Mini-ITX cases i've seen can't actually fit a 1080Ti due to the new form factor of 2.5 slot height cards (e.g. the NZXT manta or the phtankes Enthoo series can't fit the new heights ...