What is the memory bit width?

The memory bit width is the number of digits that can transmit data in a clock cycle, the larger the number of bits, the larger the amount of data that can be transmitted instantaneously, which is one of the important parameters of video memory. At present, the video memory on the market is 64, 128 and 256 three, of which, the Non-mainstream 192, 384-bit. The higher the bit width of the video memory, the better the price of the higher the performance.

Role

All along, hardware manufacturers in order to earn more profits in the hardware products, in addition to strengthening product packaging, enhance business publicity and other practices, in the product from the body, by various means to depress production costs is also an extremely effective means, unfortunately, this means will ultimately damage the interests of consumers. For hardware products, as long as a thorough understanding of the technical, you can inconvenience should be changed, the final choice to the value of goods products, and it is not difficult.

Memory is an important part of the card, and the video memory for the graphics cards are no less important than the display chip. In principle, memory is like a warehouse, and the display chip is like a factory. This warehouse can store both the raw materials of the factory and the products produced by the factory, so how fast the factory is manufactured, how many products can be produced at a time, and the significant relationship between them. And from the performance and cost, video memory for the entire graphics card is second only to the display chip.

The price of the display chip is generally determined by the chip manufacturer, there are a few nvidia,amd, chip prices are also open. This makes it easier for graphics companies to keep their costs down in memory.

In fact, in addition to video memory and chips, the general electronic components (such as capacitors, inductors) added together also difficult to exceed the graphics card cost of 5%, so video graphics card manufacturers are the easiest place to do the foot. For graphics vendors, using lower-priced video memory is naturally the easiest way to do this, and there are several ways to do this: for example, using a grainy memory particle, using a lower-cost package, using a low nanosecond memory, using a lower bit of memory. And the relative number, whether it is a motley, nanosecond, packaging form these points are more easily identified.

The importance of the bit width of video memory

Video Memory bandwidth = video memory frequency x Memory bit width/8, then in the video memory frequency is equivalent, the memory bit width will determine the size of memory bandwidth. For example, the same video memory frequency of 500MHz 128-bit and 256-bit memory, then the two video memory bandwidth will be: 128-bit =500mhz*128∕8=8gb/s, and 256-bit =500mhz*256∕8=16gb/s, 128-bit twice times, The importance of the visible memory bit width in the memory data.