How do I calculate DDR bandwidth?

To measure the memory bandwidth for a function, I wrote a simple benchmark. For each function, I access a large 3 array of memory and compute the bandwidth by dividing by the run time 4. For example, if a function takes 120 milliseconds to access 1 GB of memory, I calculate the bandwidth to be 8.33 GB/s.Click to see full answer. Similarly, how is memory bandwidth calculated?400,000,000 clocks per second × 2 lines per clock × 64 bits per line × 2 interfaces = This theoretical maximum memory bandwidth is referred to as the “burst rate,” which may not be sustainable. The specified bandwidth (6400) is the maximum megabytes transferred per second using a 64-bit width.Also Know, what is maximum memory bandwidth? The maximum theoretical memory bandwidth is the product of the memory clock, the transfers per clock based on the memory type, and the memory width. For example, a video card with 200 MHz DDR video RAM which is 128 bits wide has a bandwidth of 200 MHz times 2 times 128 bits which works out to 6.4 GB/s. In this regard, how do I know my DDR speed? How to Calculate Memory Transfer Rate Determine the bus clock rate. This information should be labeled on the memory’s packaging. Multiply the bus clock rate by 1, 2 or 3 depending on how many streams of information are flowing at once. Multiply the result from the previous step by 64, which is the number of bits transferred. How is maximum memory bandwidth calculated?Compute max memory bandwidth of a processor. It says the CPU has 2 channels. So I think it has 2 memory controller inside. Then the max memory bandwidth should be 1.6GHz * 64bits * 2 * 2 = 51.2 GB/s if the supported DDR3 RAM are 1600MHz.