In recent years, graphics card manufacturers focus largely in increasing the memory bandwidth, especially when AMD launched their R9 Fury X and Nano series cards with the High Bandwidth Memory (HBM) in 2015. Samsung announced that 36 of its products winning the CES 2018 Innovation Awards, which the GDDR6 memory is included.
The fastest and lowest-power DRAM for next generation, graphics-intensive applications.
GDDR6 memory will be the successor of the mainstream graphics card memory, GDDR5. According to Samsung, GDDR6 memory can handle images and videos at a speed of 16 Gbps with 64GB/s data I/O bandwidth. This is equal to about 5 GB per second transfer rate.
For comparison, Nvidia pushed the GTX 1060‘s standard GDDR5 memory to run at 9 Gbps, which has a total bandwidth of 216 GB/s on a 192-bit memory bus. With the newer GDDR5X, the GTX 1080 Ti and Titan Xp are able to reach speed over 11 Gbps, with bandwidth at 484 GB/s (352-bit memory bus) and 547 GB/s (384-bit memory bus) respectively.
GDDR6 memory will surpass its predecessor by quite a large margin. GDDR6 on a 192-bit memory bus will have bandwidth of 384 GB/s, 256-bit bus at 512 GB/s and 352-bit bus at a whooping 704 GB/s. This will even outperform AMD’s current flagship RX Vega 64 HBM2 memory at 484 GB/s (1.9 Gbps on 2048-bit bus).
Not only the insane amount of bandwidth, GDDR6 is expected to be more efficient to operate. Instead of taking 1.5 V at 8 Gbps (GDDR5), it will use only 1.35 V at 16 Gbps.
GDDR6 memory should be available in graphics cards in the next year, may be featured in NVIDIA next generation Volta-based GPUs.
Update: NVIDIA’s new generation Turing-based RTX-20 series graphics cards are equipped with GDDR6 memory.
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