LPDDR4 vs LPDDR5 | Difference between LPDDR4 and LPDDR5

This page compares LPDDR4 vs LPDDR5 and mentions difference between LPDDR4 and LPDDR5.

What is LPDDR ?

The LPDDR5 is low power volatile (DRAM) device memory standard defined for storage of code, applications and data. It is SDRAM (Synchronous Dynamic Random Access Memory) which consumes less power. It is targetted for use in mobile devices such as phones, tablets and laptops.

LPDDR Generations Chart
Image Courtesy : Synopsys

The figure-1 shows chart of LPDDR generations from LPDDR1 to LPDDR5. Refer benefits or advantages of LPDDR5 DRAM >>.

Difference between LPDDR4 and LPDDR5

Following table mentions difference between LPDDR4 and LPDDR5.

Specifications LPDDR4 LPDDR5
I/O bus clock frequency (MHz) 1600 MHz, 2133 (For LPDDR-4X) 3200 MHz
Prefetch size 16 bit 32/16 bit
Data transfer rate or speed in Mbps 3200, 4267 (for LPDDR-4X) 6400
Supply voltage 1.1V core, 1.8 V DRAM array, 1.1V/0.6V I/O 0.5V/0.3V I/O, 1.05V/0.9V Core, 1.8 V DRAM array
Command or address bus size 6 bits, DDR ?

Conclusion: The difference between LPDDR4 and LPDDR5 is as follows. LPDDR5 DRAM supports higher data rates and large device sizes at low operating voltages compare to LPDDR4/4X DRAMs.

Also refer advantages or benefits of UFS storage interface over e-MMC.

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