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Why Should You Use DDR4 Over DDR3

First you need to know what are DDR3 and DDR4 exactly?

What is DDR3?

  • In computing, DDR3 an abbreviation for Double Data Rate type three synchronous dynamic random access memory with a high bandwidth interface and has been in use since 2007.

  • It is a higher speed successor to DDR and DDR2 but predecessor to DDR4 synchronous dynamic random- access memory chips.

  • It is neither forward nor backward compatible with any earlier type of random- access memory because of different signalling voltages, timings and other factors.

What is DDR4?

  • While, DDR4, a double data fourth generation synchronous dynamic random access memory with a high bandwidth released to the market in 2014 is one of the latest variants of Dynamic Random Access Memory and a higher successor to DDR2 and DDR3 technologies.

  • It is not compatible with any earlier type of RAM due to different signalling voltages, physical interface and other factors.

  • The primary advantages of DDR4 over its predecessor, DDR3, include higher module density and lower voltage requirements, coupled with higher data rate transfer speeds.

10 Reasons Why DDR4 [Comparison]




DDR4 Advantage

Data Transfer Rate (Mb/s)

800, 1066, 1333, 1600, 1866, 2133

1600, 1866, 2133, 2400, 2666, 3200

Migration to higher speed I/O

Module Density

512MB – 8GB

2GB – 16GB

Better enablement for large – capacity memory subsystems

Required Voltage

1.5 V

1.2 V

Reduces Memory Power demand

Internal Banks



More banks

DQ bus



Mitigate I/O noise power

ODT Control

ODT signals required

ODT signals not required

Ease of ODT control, allows non ODT routing on PtP applications

ODT Modes

Nominal, Dynamic

Nominal, Dynamic, Park

Additional control Mode; supports OTF value change

Multipurpose register

4 registers- 1 defined, 3 RFU

4 registers- 3 defined, 1 RFU

Provides additional Speciality Readout

Round -Trip Time ()

12, 60, 40, 30, 20

240, 120,80,60,48,40,34

Support higher data rates

DQ Driver



Optimized for PtP application

One Comment

  • Reply Ganapathy Sriniwas Iyer |

    It is very nice and informative and if you can Suggest a suitable ddr4 for different browsers I think it will be more useful and the approximate price of different speeds. Thank you once again.

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