Samsung to reveal crazy-fast 42.5 Gbps GDDR7 memory in February

Samsung plans to reveal ultra-fast 42.5 Gbps GDDR7 memory at ISSCC 2025

The Advance Program for ISSCC 2025 has been released, giving us a glimpse into the future of memory technology. Samsung has confirmed that they will be discussing their 24 Gb GDDR7 memory technology and new 42.5 Gbps modules. These memory modules will be of great interest to GPU manufacturers and gamers, as their memory capacity and bandwidth are much higher than today’s memory offerings.

For context, today’s fastest GDDR6 memory chips deliver 24 Gbps speeds on 16 Gb chips. This means that Samsung’s new GDDR7 chips are 77% faster and have 50% more memory capacity. It must also be noted that we know of no product that uses Samsung’s 24 Gbps GDDR6 modules. The fastest GDDR6 memory we have seen used is the 20 Gbps chips on AMD’s Radeon RX 7900 XT and RX 7900 XTX.

Samsung has previously revealed 24 Gb GDDR7 modules with 40 Gbps speeds, where the company states that these ultra-fast modules could be “further enhanced” depending on their usage environment. These GDDR7 memory modules will power future generations of graphics cards, enabling the next leap on GPU performance.

(Image from ISSCC 2025 Advanced Program)

Note that these new memory modules from Samsung solve two problems. They deliver higher per-module memory capacities, and they deliver huge leaps in available memory bandwidth. Both are needed to deliver true leaps in GPU performance. However, it will take a while for the GPU market to adopt these new high-speed GDDR7 memory modules. Even if these modules become available soon, we are unlikely to see GPUs utilise these memory speeds until Nvidia’s RTX 60 series and other future-generation products.

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