Question

Consider a memory organised into 8K rows, and that it takes 4 cycles to complete a read operation. Then the refresh overhead of the chip is ______

(a) 0.0021

(b) 0.0038

(c) 0.0064

(d) 0.0128

The question was posed to me in quiz.

I would like to ask this question from Large Memories in chapter Memory System of Computer Architecture

Answer 1

The correct answer is (b) 0.0038

To elaborate: The refresh overhead is calculated by taking into account the total time for refreshing and the interval of each refresh.