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| Features | DDR4 | DDR5 | DDR5 Advantages |
|---|---|---|---|
| Speed | 1.6 to 3.2 GT/s 0.8 to 1.6 GHz clock | 4.8 to 8.4 GT/s 1.6 to 4.2 GHz clock | Higher bandwidth |
| IO Voltage | 1.2V | 1.1V | Lower power |
| Power Management | On motherboard | On DIMM PMIC | Better power efficiency Better scalability |
| Channel Architecture | 72-bit data channel (64 data + 8 ECC) 1 channel per DIMM | 40-bit data channel (32 data + 8 ECC) 2 channels per DIMM | Higher memory efficiency Lower latency |
| Burst Length | BC4, BL8 | BC8, BL16 | Higher memory efficiency |
| Max. Die Density | 16Gb | 64Gb | Higher capacity DIMMS |
| More Intelligence | SPD (IZC) | SPD Hub & Temperature Sensors (I"C) | Enhanced system management Greater telemetry for thermal management |