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GDDR6 vs GDDR7 – Specifications Comparison

GDDR6 vs GDDR7 - Specifications Comparison

The world of graphics memory is evolving rapidly, with new technologies constantly being developed to meet the growing demands of high-performance computing and gaming. This blog post will delve into a detailed comparison between GDDR6 and GDDR7, two of the latest graphics memory technologies.

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Related Reading: HBM2 vs GDDR6

Samsung unveils GDDR7: 40% faster and 20% more energy efficient than GDDR6 -

Source: Samsung

Before diving into the specifics, let’s understand GDDR memory. GDDR (Graphics Double Data Rate) memory is a synchronous dynamic random-access memory (SDRAM) specifically designed for graphics or video cards. GDDR memory is faster than standard DDR memory, as it needs to handle large amounts of data simultaneously to render graphics in real time.

Also Read: GDDR5 vs GDDR6

Samsung recently announced the development of the industry’s first GDDR7 DRAM, promising to unlock the next generation of graphics performance. This new technology is expected to outperform its predecessor, GDDR6, in several key areas. Let’s take a closer look at how these two technologies stack up against each other.

GDDR6 vs GDDR7: Specifications Comparison

Developed bySamsung, Micron, HynixSamsung
Release Date20182023
Data Rate (per pin)14 Gbps to 16 Gbps28 Gbps
Bandwidth (per chip)56 GB/s to 64 GB/s112 GB/s
Memory SizeUp to 24 GBUp to 48 GB
Process Technology10nm7nm

Data Rate

The data rate is one of the most significant differences between GDDR6 and GDDR7. GDDR7 offers a data rate of 28 Gbps per pin, nearly double the 14-16 Gbps offered by GDDR6. This means that GDDR7 can process twice as much data simultaneously, leading to significantly improved performance.


The bandwidth of a memory chip refers to the amount of data it can read or write per second. With a bandwidth of 112 GB/s per chip, GDDR7 offers nearly double the bandwidth of GDDR6, which ranges from 56 GB/s to 64 GB/s. This increased bandwidth allows for faster data transfer, significantly improving the performance of high-end graphics cards and gaming consoles.


GDDR7 operates at a lower voltage than GDDR6, 1.1V compared to 1.35V. This lower operating voltage can lead to energy savings, which is particularly important in high-performance computing environments where energy efficiency is a key concern.

Memory Size

GDDR7 supports memory sizes up to 48 GB, double the maximum memory size supported by GDDR6. This increased memory size can allow for more detailed and realistic graphics, particularly in high-end gaming and virtual reality applications.

Process Technology

GDDR7 is manufactured using 7nm process technology, compared to the 10nm process used for GDDR6. This smaller process size can lead to increased performance and energy efficiency.


While GDDR6 has served us well in the current generation of graphics cards and gaming consoles, the advent of GDDR7 promises to take graphics performance to the next level. With its higher data rate, increased bandwidth, lower voltage, larger memory size, and more advanced process technology, GDDR7 is set to unlock the next generation of graphics performance.

However, it’s important to note that the real-world performance of these technologies will depend on how they are implemented in specific hardware. As always, we’ll have to wait and see how graphics card manufacturers leverage this new technology in their upcoming products.

Stay tuned for more updates on the latest developments in graphics memory technology!

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