A [[graphics card]] that is a part of Nvidia's Geforce RTX 30 series video card line.  It is the successor of Nvidia's Titan developer line of video cards.

The RTX 3090 is a relatively large graphics card and generally takes up at least 3 expansion slots within a computer.  The founder's edition (a line of video cards produced and sold by Nvidia themselves) version of the RTX 3090 features two cooling fans, one of which is an uncommon pass-through fan that vents the air from one side of the card to the opposite side.
geforce rtx 3090