Match the following memory DDR3 memory types with the correct bus and transfer speed. There are more answers than are needed.
-PC3-6400

Question

Quizplus · Accepted Answer

DDR3 memory types are often labeled with a "PC3" prefix followed by a number that represents the theoretical maximum bandwidth in megabytes per second. For example, PC3-6400 corresponds to a peak bandwidth of 6400 MB/s.
DDR (Double Data Rate) memory transfers data on both the rising and falling edges of the clock signal, effectively doubling the data rate. Therefore, to find the correct bus and transfer speeds, you can divide the peak bandwidth by 8 (since there are 8 bits in a byte) to get the transfer speed in megatransfers per second (MT/s), and then divide by 2 to find the bus speed in MHz.
For PC3-6400:
6400 MB/s / 8 = 800 MT/s (Transfer Speed)
800 MT/s / 2 = 400 MHz (Bus Speed)
However, the provided options do not include a bus speed of 400 MHz. The closest match is option A, which lists a bus speed of 800 MHz and a transfer speed of 1600 MT/s. This is likely a typographical error in the question, as the correct bus speed for PC3-6400 should be 400 MHz, not 800 MHz. If we assume that the bus speed is indeed meant to be 400 MHz, then the correct answer would be:
A. Bus Speed 400 MHz, Transfer Speed 1600 MHz
This would be the correct match for PC3-6400, with the understanding that the bus speed is half the transfer speed in MT/s.

Match the Following Memory DDR3 Memory Types with the Correct