Samsung is about to release the GDDR7 standard, with a speed increase of 33% compared to GDDR6

According to news on January 29, the 2024 IEEE International Solid-State Circuits Conference (ISSCC) will be held in San Francisco from February 18 to 22. It is the highest-level conference in the field of integrated circuit design recognized by the world's academic and corporate circles. Samsung will demonstrate For its GDDR7 technology, the theme is "16Gb 37 Gb/s GDDR7 DRAM with PAM3 optimized TRX equalization and ZQ calibration".
GDDR7 will use PAM3 encoding, which is between PAM4 and NRZ. Compared with NRZ, it achieves a higher cycle data transfer rate and reduces the need for higher memory bus frequency, thus bringing better performance than GDDR6. Higher performance, lower power consumption and cost than GDDR6X.
In addition, GDDR7 will also have optimizations for memory efficiency and power consumption, including four different clock reading modes, allowing it to run only when needed, and its memory subsystem will also support issuing two independent commands in parallel , thereby further optimizing power consumption.
In fact, Samsung has previously unveiled GDDR7 technology at the 2022 Technology Day. The first batch of products have a rated transmission speed of up to 32 Gbps, which is 33% higher than GDDR6, thus achieving 1.5 TB/s on the 384bit bus interface. bandwidth.

Samsung also issued a press release in October last year to introduce more details. Samsung said that they have continuously improved the dynamic power consumption of GDDR7 in the past year, and through additional clock control, standby power consumption can be 50% lower than GDDR6.
Samsung officials said that compared to the current fastest 24 Gbps GDDR6 DRAM, GDDR7 will provide 40% performance improvement and 20% energy efficiency improvement. IT House noticed that Samsung also mentioned at the time that they tested early samples of 36 Gbps, but did not announce specific details.
Samsung GDDR7 DRAM will feature technology optimized for high-speed workloads and will also offer low operating voltage options, designed for battery-focused products such as laptops.

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