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DDR4 supports higher memory densities up to 16 GB. DDR4 stands for Double Data Rate Type 4 and it has several advancements and improvements over DDR3. However, after a few months, DDR4 will surely take over DDR3. Still DDR4 is not much famous in the market because it was just released a few month ago and hence the motherboards in the market still supports only DDR3. There is a special version of DDR3 RAMs called DDR3 low voltage standard, which uses just 1.35 V instead of 1.5 V and is used in some mobile devices to achieve better battery life.ĭDR4 was introduced this year (2014) as the successor to DDR3. The DDR3 modules used on laptops are called SO-DIMM and its length is much smaller with a length of 67.6 mm and less number of pins that is 204 pins.

A DDR3 RAM module used for personal computers has 240 pins and the length is 133.35 mm.

DDR3 standard allows chips up to capacity 8 GB. The voltage specification for DDR is 1.5 V and, therefore, it consumes very less power when compared to its predecessors. It was released to the market in 2007 and today almost all computers and laptops in the market uses DDR3 as the RAM. What is DDR3?ĭDR3, which stands for Double Data Rate Type 3, is a type of Dynamic Random Access Memory ( DRAM) that came as the successor of DDR and DDR2. Therefore, the notch in DDR3 and DDR4 are at different places and a DDR4 module will not fit into a DDR3 socket and vice versa. The physical length of DDR3 and DDR4 are the same, but they are not backward compatible as the standard is different. Also, the memory density allowed is higher in DDR4. DDR4 RAMs consume less power than DDR3, but their speed is much higher. DDR4, which was released this year, is still not much famous in the market but, in the next year, it will soon outstand DDR3.

DDR4 is the successor of DDR3 and hence consists of improvements in factors such as power consumption, size, speed and efficiency. As a matter of fact, DDR, which stands for Double Data Rate, is a specification used for RAM. However, before delving into the difference between DDR3 and DDR4, let us see the specifications of both RAMS. This article presents you a comparison between DDR3 and DDR4, highlighting the important differences between both RAMs.