Question: is ddr3 and ddr4 the same?
Answer: Another big difference between DDR3 and DDR4 is speed. DDR3 specifications officially start at 800 MT/s (or Millions of Transfers per second) and end at DDR3-2133. ... DDR4-2666 CL17 has a latency of 12.75 nanoseconds—basically the same. But the DDR4 provides 21.3GB/s of bandwidth compared to 12.8GB/s for DDR3.