A DX11 card is compatible all the way back to DX7 (most likely back to DX5 or before). A DX11 has PS 5.0 which is compatible back to the 1st version of PS.
A DX11 card is compatible all the way back to DX7 (most likely back to DX5 or before). A DX11 has PS 5.0 which is compatible back to the 1st version of PS.