M stands for mobile version

MX is a new version of M. For example, 670M is the previous architecture and 670MX is the new architecture.

SLI refers to the interconnection of two graphics cards. For example, GT750M SLI refers to the interconnection performance of two GT750M graphics cards, which is 50-70% higher than that of a single card.

N card refers to the graphics card produced by NVIDIA, and A card refers to the graphics card produced by AMD(ATI).

These two manufacturers are the world's largest GPU manufacturers of independent graphics cards, which almost monopolize the market share of all independent graphics cards. So there are two kinds of discrete graphics cards: A card and N card.

Simply put: the card is the graphics card packaged by AMD display chip. N card is a display card packaged by NVIDIA's display chip. To put it more simply, just like a computer, its CPU is different from Intel and AMD. Generally speaking, only these two GPUs (graphics processors) occupy the vast majority of the independent display chip market.

The best brands of AMD graphics cards are sapphire and Dylan Hengjin. The best N card is Sotai, and now Zhong Ying is doing very well.