1. Different references
1, independent graphics card: in the form of an independent board, can be freely inserted and removed on the motherboard with a graphics card interface.
2, not independent graphics card: also known as integrated graphics card, does not have video memory, but uses part of the system's main memory as video memory, the specific amount is generally automatically dynamically adjusted according to the needs of the system.
Second, different characteristics
1, independent graphics card: the graphics card has its own video memory and can call the system memory through the system bus to increase the video memory capacity, typical NVIDIA developed Turbo Cache technology and ATi's Hyper Memeroy technology can do so.
2, not independent graphics card: by the motherboard north bridge chip integrated with the graphics card chip motherboard is called integrated motherboard, the north bridge integrated graphics card chip is the core of the integrated graphics card, the core and video memory together form the integrated graphics card.
Three, the memory usage is different
1, independent graphics card: has a separate video memory, does not occupy the system memory, and technically ahead of the integrated graphics card, can provide better display effect and performance.
2, not independent graphics card: integrated graphics card operation requires a large amount of memory space, the impact on the entire system will be more obvious, in addition to the frequency of the system memory is usually much lower than the independent graphics card, so the performance of the integrated graphics card is inferior to the independent graphics card.