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What do the bits in a Graphics Card mean?

post #1 of 5
Thread Starter 
I've looked around a little bit, but no site really gives a good explanation, so I was wondering what exactly the bits in a graphics card are? I know most cards range from 128 to 384, but is there really any advantage to a GPU that has 384 bits?
post #2 of 5
Memory bandwidth... Higher= better/faster
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post #3 of 5
Generally speaking, the bit-width of a GPU refers to the width of the memory bus. A higher memory bus width means that more data can be transferred between the memory and the graphics processor, running at the same speed as the lower bus width. For example, a 256-bit memory bus can deliver twice as much data as the 128-bit at the same speed.
post #4 of 5
Quote:
Originally Posted by Frosty88;14258157 
Generally speaking, the bit-width of a GPU refers to the width of the memory bus. A higher memory bus width means that more data can be transferred between the memory and the graphics processor, running at the same speed as the lower bus width. For example, a 256-bit memory bus can deliver twice as much data as the 128-bit at the same speed.

lol long version tongue.gif
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post #5 of 5
bits means that how many bits can you send in one times, and clock MHz means that how many times you can send in one seconds, so if you wanna know the bandwidth of one card you can calculate like ( XXXbits * XXXMHz / 8), and then you can know how many bytes are the bandwidth.
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