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Difference between DDR3 and DDR4 RAM with Comparison Chart

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Difference between DDR3 and DDR4 RAM with Comparison Chart

In case you have been scouring the marketplace to get yourself a new system, it is possible that you have come across the words DDR3 and DDR4 RAM. The DDR3 RAM has been around for a decade now. However, with the memory requirements of games and applications increasing with each passing day, more powerful processors and larger memory devices are being put into use. These days, DDR4 modules are becoming popular with more customers opting for upgrades. In the given scenario, and with comparable performance metrics and expensive newer technology taking centre stage, it has become essential to understand the key differences between ddr3 and ddr4 RAM.

In this article, we intend to take you through a detailed comparison of DDR3 RAM vs DDR4 RAM. You will also get to know about what is ddr4 ram, what does ddr3 mean, the features and functionality of ddr4 vsddr3 RAM, etc.

DDR4 vs DDR3

Basis of Differentiation



Origin and Nature

DDR3 RAM was introduced in 2007. It is a synchronous dynamic random-access memory (SDRAM). Featuring high bandwidth interface, DDR3 RAM is available in the form of multiple variants.


Released in 2014, DDR4 RAM possesses several benefits over and above those on offer by DDR3 RAM. It supports next-generation devices with its cutting-edge technology. DDR4 allows for the addition of powerful processors to user hardware.


DDR3 RAM includes ECC memory comprising of extra data byte lanes that can be used for the correction and detection of the smallest of errors.

It provides computing capabilities on differing consumer platforms - smartphone, tablet, desktop computer, etc.


With the increasing demand of DDR4 RAM, the decade old reign of DDR3 RAM is waning.

The demand for DDR4 RAM is on a persistent rise because of its implementation of emerging technologies.


DDR3 RAM works on 1.50 V voltage

DDR3 RAM works on 1.20 V voltage. This difference in voltage allows for15 saved watts in a typical system.

Bus Clock

400-1066 MHz

1066-2133 MHz

Internal rate

100-266 MHz

100-266 MHz

Transfer Rate

The transfer rate pertaining to DDR3 RAM begins at 0.80 GT/s and optimizes at 2 GT/s. The range of transfer rate is 0.80-2.13 GT/s.

The range of transfer rate in case of DDR4 modules is 2.13-4.26 GT/s.

Channel Bandwidth

6.40-17.0 GBps

12.80-25.60 GBps

Pins/ Pin-to pin distance

DDR3 RAM possesses a 240-pin interface. However, as the pin-to-pin distance is decreased from 1.00 mm in DDR3 RAM to 0.85 mm in DDR4 RAM, it is difficult to understand that 44 extra pins have been included in the new version of the RAM.

DDR4 RAM depicts a 288-pin interface. These additional pins are useful for increasing the overall bandwidth capacity of the DDR4 RAM.


Backward compatibility

DDR3 RAM is backward compatible with the older generations of RAM.

Because of its changed physical design, DDR4 RAM is not backward compatible with older RAM generations.

Height of bare RAM modules

Bare DDR3 RAM modules possess a height of 30.35 mm.

Bare DDR4 RAM modules showcase a height of 31.25 mm. The high-performance DDR4 memory modules possess a heatsink for greater efficiency.

Memory module size

Singular DDR3 memory modules can have the maximum size of 8 GB only.

There is no limitation to the size of DDR4 memory modules. This feature makes DDR4 RAM modules perfect for memory-intensive applications, video editing, etc.


DDR3 RAM modules operate at a latency rate of CL11. They take approximately 13.75 nanoseconds for initiating a read.

Most DDR4 RAM modules are known to operate at a latency rate of CL15 or CL16. Therefore, they are known to take about 2 percent more time for initiating a read.


DDR3 RAM is still being used in many systems. However, users looking for an upgrade are now opting for DDR4.

DDR4 provides users with higher transfer rate. It operates at lower voltage, shows more stability, and depicts minor/measurable performance gains when used with memory-intensive applications.

What is DDR3 RAM?

The full form of DDR3 RAM is "Double Data Rate Type 3 RAM." It is an essential type of SDRAM utilized for system memory. Available in SO-DIMM as well as DIMM form factors, DD3R RAM has been dominating the systems hardware market place for over a decade in a row. In comparison to systems running on DDR2 RAM, computers with DDR3 memory are capable of transferring data from one location to another at a much faster speed.

What is DDR4 RAM?

DDR4 SDRAM is the abbreviated form for "Double data rate fourth generation synchronous dynamic random-access memory". DDR4 RAM brings forth the latest variants of memory when it comes to next-generation of computing. Courtesy the decreased voltage and increased transfer rates of DDR4, it is capable of providing users with optimum efficiency and higher speed at all times.

Key Difference between DDR4 and DDR3

The key points of difference in terms of ddr3 vs ddr4 are enumerated below:

1. Among the most significant improvements made by DDR4 over DDR3 are its available clock speeds, timings, decreased power consumption, reduced latency, etc.

2. Users of DDR3 had four different choices in terms of clock speed - 1333Mhz, 1600Mhz, 2133Mhz and 1866Mhz. 800Mhz as well as 1066Mhz configurations are still existent in ddr3 ram but they are slowing giving way to faster products. The 28GB DDR4 configuration, along with multiple variants of 32GB sticks clocked to 3000Mhz, are making waves in the ddr4 market space.

3. The maximum possible limit of memory stored on one motherboard in DDR3 configuration systems is 128GB. On the other hand, DDR4 can story memory of up to four times over that amount, with the optimum range reaching 512GB.


Now that you have a fair understanding of the basic differences between ddr3 and ddr4 RAM, you will find it easy to freeze your choice on the best one. It is important to understand your system configuration before making the purchase. In case you have any further queries regarding ddr4 vs ddr3, then do write to us in the Comments section below. We will be happy to assist you with our views at the earliest.