But having said that there are some good single-slot graphics cards that are quite powerful, and you can use them for a decent amount of gaming and graphics-related work. Only some of the entry-level graphics cards come with a single-slot form factor, but they are not good for gaming purposes.
The main disadvantage of dual-slot graphics cards is that they occupy two or more slots on your motherboard, and if you have a smaller motherboard like a microATX one, then you will not be able to fit an expansion card in the adjacent and vacant PCI-E slot that is already occupied by the graphics card. This is because these cards come with powerful GPUs, and to cool them a bigger heatsink with one or more fans is required, thereby increasing the height of the graphics card.
Almost all of the mid-range and high-end graphics cards available today come with a dual-slot design which means they occupy two slots on your motherboard and computer case.
