DRAM

Which correctly describes a DRAM burst transfer?

  1. AA single read command transfers several consecutive data words, one after another on successive clocks
  2. BData is compressed before transfer
  3. CRefresh and data transfer are performed at the same time
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Answer: A. A single read command transfers several consecutive data words, one after another on successive clocks

In a burst transfer, one read or write command transfers several data words at consecutive addresses (for example, 8) on successive clocks. Because a command is not needed for each word, blocks of data such as cache lines can be transferred efficiently.

  • A. Correct. One command transfers consecutive data together.
  • B. DRAM burst transfer does not compress data.
  • C. Normal reads and writes cannot be performed during refresh.
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More DRAM questions

  1. Which is closest to the peak bandwidth of one channel of DDR4 memory with a data rate of 3,200 MT/s and a 64-bit data bus?
  2. What is the main effect of running PC memory in dual-channel mode?
  3. Which correctly describes a "rank" on a DRAM module?
  4. How many 8-bit-wide (x8) DRAM chips are needed per rank to form a 64-bit data bus (without ECC)?
  5. In most current PC processors, where is the memory controller that controls DRAM located?