As the BC1 Mini is an open testbench style case, there is no actual physical limit to the size of the card that will fit; the only limitation is one of practicality (e.g. will it be awkward to handle) and one of weight distribution. With a card that extends far beyond the edge of the table, we suggest making sure the PSU is installed first to ensure the centre of mass keeps the table from tipping. Most (if not all) current large GPUs can be used with the BC1 Mini