DDR Memory Generations: DDR3 / DDR4 / DDR5
Data rate, supply voltage and architectural differences across three DDR SDRAM generations.
| Generation | Data rate (MT/s) | Voltage | Channels per module | Key features |
|---|---|---|---|---|
| DDR3 | 800–2133 | 1.5V (DDR3L 1.35V) | Single 64-bit | Mainstream from 2007 |
| DDR4 | 1600–3200 | 1.2V | Single 64-bit | Lower voltage, higher speed vs DDR3 |
| DDR5 | 4800–8800 | 1.1V | Dual independent per DIMM (2×32-bit) | On-die ECC; PMIC moved onto the module |
Method & sources
Data-rate ranges are common JEDEC-standard ranges; DDR5 voltage, dual-channel and on-die ECC per Micron product documentation. Values are spec ranges; actual modules vary by product.
Source: https://www.micron.com/products/memory/dram-components/ddr5-sdram
Retrieved: 2026-09
FAQ
- What does "DDR Memory Generations: DDR3 / DDR4 / DDR5" cover?
- It covers DDR3, DDR4, DDR5, compared across: Generation, Data rate (MT/s), Voltage, Channels per module, Key features.
- What are the sources and methodology?
- Data-rate ranges are common JEDEC-standard ranges; DDR5 voltage, dual-channel and on-die ECC per Micron product documentation.
- When was this data last updated?
- The data was retrieved/updated on 2026-09.