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The Differences Between DDR3 & DDR4

February 15, 2022

DDR3 and DDR4 both are types of synchronous dynamic random-access memory (SDRAM) with a high bandwidth interface. And they still exist some differences.

Working performance is different. The data transfer rate of DDR3 only has 800 to 1600MT/s at the beginning, and later expanded to 2133MT/s. But DDR4 owns a higher clock frequency and data transfer rate, supporting a data transfer rate of 2133 to 4266MT/s.

Working voltage is different. DDR3 is 1.2V to 1.5V, and DDR4 only has 1.05V to 1.2V power supply voltage. Lower operating voltage means lower work consumption, saving power, and reducing the overheating risk of the EPOS system.

Application motherboard of EPOS system is different. Before 2014, all the motherboards on sale only supports DDR3, such as J1900, the 3rd gen – 5th gen motherboard of i3, i5, i7. And when DDR4 was launched in 2014, the related motherboard was released as well . Including the 6th gen or more advanced motherboard of i3, i5, and i7.

Interface Type DDR3L
Interface Socket SO-DIMM 204pin
Max Capacity 8GB(J1900 motherboard)
16GB (i3/i5/i7 motherboard, 3rd gen – 5th  gen)
Working Frequency 1333MHz/1600MHz
Operating Voltage 1.35V


Interface Type DDR4
Interface Socket SO-DIMM 260pin
Max Capacity 8GB (J4125 motherboard)
16GB (J6412 motherboard)
32GB (i3/i5/i7 motherboard, 6th gen or more)
Working Frequency 2400MHz
Operating  Voltage 1.2V



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