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Micron's DDR4 vs DDR5 table lists which chip feature as new in DDR5?

On-die ECC, error correction built into each memory chip.

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  1. A 1.5 volt supply
  2. Half of DDR4's burst length
  3. On-die ECC (error correction) ✔

Why: Micron lists on-die ECC for DDR5 and none for DDR4. DDR5 actually lowers the supply to 1.1 volts and doubles the burst length to 16.

Huh, didn't know that: Micron says on-die ECC strengthens on-chip reliability by checking and scrubbing errors inside the chip.

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References

Answer: On-die ECC (error correction). Micron lists on-die ECC for DDR5 and none for DDR4. DDR5 actually lowers the supply to 1.1 volts and doubles the burst length to 16.

  1. DDR5 DRAM, Micron Technology www.micron.com/products/memory/dram-components/ddr5-sdram
    On-die ECC None 128b+8b SEC, error check and scrub Strengthens on-chip RAS
    Checked 2026-10-10.
  2. DDR5 DRAM, Micron Technology www.micron.com/products/memory/dram-components/ddr5-sdram
    Burst length BL8 (and BC4) BL16 (and BC8 OTF)
    Checked 2026-10-10.

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