Does the larger the memory capacity, the better the performance?

No.

It does not necessarily mean that the video memory capacity is large. For the same GPU and the same video memory, the bigger the better. Video memory is divided into GDDR3 and GDDR5. 1G GDDR3 video memory is not necessarily as good as 512M GDDR5 video memory.

The performance of a graphics card depends not only on the video memory, but also on the core of the graphics card, which is the core model of the graphics card. For example, GTX460 is based on GF104 core, but the current GTX970 or GTX960 is based on GM204 core.

Then it must be that the GM204 core is much more advanced. Therefore, the larger the video memory in the same graphics card, the better the performance. However, for different models, it depends on the comprehensive parameters of the graphics card. You cannot judge the performance of the graphics card just by looking at the video memory.

Elements

The larger the video memory capacity does not necessarily mean the higher the performance of the graphics card, because the three factors that determine the performance of the graphics card are firstly the display chip used, and secondly the video memory Bandwidth (which depends on the memory bit width and memory frequency), and finally the memory capacity.

How much video memory capacity a graphics card should be equipped with is determined by the display chip it uses. That is to say, the video memory capacity should match the performance of the display core. The performance of the display chip The higher the display chip, the higher the processing power, the larger the video memory capacity it should be equipped with. However, a low-performance display chip equipped with a large-capacity video memory will not help its performance.

Reference for the above content: Baidu Encyclopedia-Video Memory Capacity