LPDDR5 vs LPDDR4x vs LPDDR4 – How Much Better is the Fifth Gen?

Today, Samsung finally releases the fifth generation of DRAM technology on smartphones, the LPDDR5. However, it’s different than the chip to be used inside the Xiaomi Mi 10 which is made by Micron (with the same process of course). After two years of being in the market, LPDDR4x which first debuted in Redmi Note 5 Pro, is going to get replaced by LPDDR5 this 2020. Well, we do know that the next generation is always better than the previous one but the question is: How much is it better than the other two generations? Let’s find out in this LPDDR5 vs LPDDR4x vs LPDDR4 comparison:


The comparison is between the generations developed by Samsung only

Specs Sheet Comparison

Speed3733 – 4,266 Mbps4,266 Mbps6,400 Mbps
Capacity4GB, 8GB, 12GB, 16GB, 24GB, 32GB8GB, 12GB, 16GB, 24GB, 32GB, 48GB, 64GB, 80GB, 96GB12GB, 48GB
Architecture86x64x, 86x64x
Operating Voltage1.8 / 1.1 / 1.1 V1.8 / 1.1 / 0.6 V1.8 / 1.05 / 0.9 / 0.5 V
UseMobile, PCMobile, AutomotiveMobile, Automotive
First introduction (Phone)Asus Phone ARLenovo Z5 ProXiaomi Mi 10 Pro (Micron)

Release Date Comparison

LPDDR5 vs LPDDR4x vs LPDDR4 – Performance Comparison

The new LPDDR5 is around 1.5x faster than the LPDDR4x in terms of data transfer. The transfer speed of the LPDDR5 is 51.2 Gbps and a pin speed of 6,400 Mbps.

The improved fourth generation ‘LPDDR4x’ is 15% faster in terms of performance than its ancestor ‘LPDDR4’, thanks to the latest 1x nm process technologyHowever, we do have some LPDDR4x RAMs such as the K4F2E3S4HA-GFCL which have the same speed as LPDDR4x, which is 4,266 Mbps.

Finally, the original LPDDR is the lowest of them. Being 1.2x faster than the previous LPDDR3 generation, it’s almost 1.5x and 1.7x slower than the latest generation. Like said, the older models have a speed of 3733 Mbps, however, the latest one has speed (4,266 Mbps) equivalent to that of the LPDDR4x.

So the fifth generation is much ahead and has significantly improved (1.5x instead of 1.2x) from the previous generation.

Winner: LPDDR5

LPDDR5 vs LPDDR4x vs LPDDR4 – Power Efficiency Comparison

LPDDR5 with the new power-saving advancements including DVFS, Deep Sleep Mode, DQ Copy, and WriteX has a power reduction of up to 45% when compared to the previous generation. With an operating voltage of between 0.5V and 1.05V, device batteries last all day.

LPDDR4x is 17% power efficient when compared to the original fourth generation. It operates between 0.6V, 1.1V, and 1.8V.

Last but not least, the LPDDR4 consumes 37% less power compared to the LPDDR3. It’s operating voltage is 1.8/ 1.1 / 1.1 V.


Winner: LPDDR5

LPDDR5 vs LPDDR4x vs LPDDR4 – Memory Capacity Comparison

When it comes to smartphones, LPDDR4 has the maximum memory of 8GB in Asus Phone AR in 2016. Then came the LPDDR4x which has 12GB of maximum memory first introduced in Lenovo Z5 Pro.

The LPDDR5 starts with the memory of 12GB. Though even 4 and 6GB of RAM is sufficient in smartphones, however, if the trend of using huge memory continues, we might see phones with 16GB RAM as well.

On the computer level, the LPDDR4 has a maximum memory capacity of 32GB, LPDDR4x has up to 96GB, and currently, we have K3LK2K20BM-BGCN as the only model for the LPDDR5 which has 48GB of memory. It is expected that the fifth generation will surpass the 100GB memory mark.


Winner: LPDDR4x (at the moment)

LPDDR5 vs LPDDR4x vs LPDDR4 – Architecture Comparison

Both LPDDR5 and LPDDR4x are based on 64x architecture. LPDDR4x does have some models which run on 86x. However, LPDDR4 runs on 86x architecture because of the time it was released. Since the 86x architecture is almost out, we should assume that LPDDR4 has no use now.

LPDDR5 vs LPDDR4x vs LPDDR4 – Price Comparison

As its 2020, almost all smartphones have been replaced with LPDDR4x. However, soon, LPDDR5 will replace the LPDDR4x (in around 2 to 3 years). Currently, LPDDR4x is the cheapest one thanks to its availability and compatibility with 64x architecture. LPDDR5 is expensive at the moment and the availability is a problem. As for 2020, we will see the LPDDR5 in flagship phones only.

Winner: LPDDR4x

Our Verdict

LPDDR5 is definitely the overall winner the credit goes to its features such as DVFS, Deep Sleep Mode, DQ Copy, and WriteX offering up to 45% improvement in power consumption and 1.5x speed of 6,400 Mbps. It’s expensive and is currently featured in flagship phones, however, at the end of 2020, we might see it in the mid-end phones and in 2021 ultimately in low-end smartphones.

Overall Winner: LPDDR5

We hoped you liked our LPDDR5 vs LPDDR4x vs LPDDR4 comparison. Want to know something? Let us know in the comment!

LPDDR5 vs LPDDR4x vs LPDDR4 – How Much Better is the Fifth Gen?
Reader Rating8 Votes
LPDDR5 over LPDDR4 and LPDDR4x
1.5x performance increase
45% power efficient
6,400 Mbps speed
DVFS, Deep Sleep Mode, DQ Copy, and WriteX
Previous Generation over LPDDR5
86x architecture (who cares in 2020)
Total Rating

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