Samsung has just announced memory with GDDR7 technology, which will be coming to future graphics cards. This new generation will bring significant improvements over the current GDDR6 standard. For example, it will be up to 25% more energy efficient than GDDR6. In addition to that, the South Korean company has also revealed that it will use PAM3 (Pulse Amplitude Modulation) signaling which also offers 25% higher efficiency than the NRZ (Nor Return to Zero) currently in use.
On the other hand, Samsung has also confirmed that the GDDR7 chips will support a bandwidth of up to 36 Gbps, that is, twice as fast as the current GPU memory chips, which reach 18 Gbps, 20 Gbps for the AMD Radeon RX 6000 and 7000 Series respectively, or 23 Gbps in the case of the GDDR6X standard developed by Micron and NVIDIA for the GeForce RTX 30 and 40 Series, as in this case PAM4 signaling has been employed to speed up and reach those speeds.
Graphics cards using the new GDDR7 standard could offer up to 1152 GB/s total bandwidth on a 256-bit memory bus and 1728 GB/s with 384-bit wide memory controllers.
GDDR7 will offer spectacular performance vs GDDR6X
So this would represent a huge increase of up to 71% in bandwidth over the current GDDR6X, which is the fastest at the moment. That is, it would be surpassing 1 TB/s, and even wider memory buses could be implemented that could reach 2 TB/s in future next-generation graphics cards.
However, GDDR7 memory is not expected to be used in graphics cards anytime soon. In addition, Samsung has also not commented on its plans regarding the launch of this new standard. Therefore, to see products based on this standard we will have to wait for now.