Consider a hypothetical system, a 48-bit width main memory with a capacity 256 TB is build using 64 T x 8-bit DRAM chips. The number of rows of memory cells in the DRAM is 225. The time taken to perform one Refresh operation is 40 ns. The refresh period is 5 s. Fraction of total memory bandwidth is lost to refresh cycle is (up to two decimal places).

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider a hypothetical system, a 48 - bit width
main memory with a capacity 256 TB is build
using 64 T x 8-bit DRAM chips. The number of
rows of memory cells in the DRAM is 225. The
time taken to perform one Refresh operation is
40 ns. The refresh period is 5 s. Fraction of total
memory bandwidth is lost to refresh cycle is
(up to two decimal places).
Transcribed Image Text:Consider a hypothetical system, a 48 - bit width main memory with a capacity 256 TB is build using 64 T x 8-bit DRAM chips. The number of rows of memory cells in the DRAM is 225. The time taken to perform one Refresh operation is 40 ns. The refresh period is 5 s. Fraction of total memory bandwidth is lost to refresh cycle is (up to two decimal places).
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