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HBM3 memory expected to feature 4 Gbps transfer rates and GDDR6-like bandwidth

Rambus could launch the HBM3 modules as early as 2019. (Source: Rambus)
Rambus could launch the HBM3 modules as early as 2019. (Source: Rambus)
Rambus released some preliminary details about the HBM3 graphics memory modules that are expected to hit the market in 2019, at the earliest. With a transfer rate of around 4 Gbps, the HBM3 modules could double the memory bandwidth, making them faster than the GDDR6 modules included in Nvidia's GTX 2000 GPUs.
Bogdan Solca,
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Rambus, the company that first introduced the DDR memory modules back in 2000, is one of the few supporters of the HBM memory for graphics cards. Launched as an alternative for the GDDR memory, the HBM is currently the more energy efficient of the two standards, but its performance is relatively subpar. GDDR6 is set to be featured in the upcoming Nvidia GTX 2000 GPUs coming in early 2018, while HBM, currently at its second iteration, will probably remain an AMD Radeon exclusive. However, Rambus just announced via ComputerBase that the third generation HMB is already in development and the expected performance gains could be on par with what GDDR6 has in store.

The projected performance gains for the HBM3 include double the HBM2 transfer rate, so around 4 Gbps, and also improved bandwidth speeds, probably even better than the 768 GB/s bandwidth of the GDDR6 standard. The memory bus is still set to be a multiple of the historical 1024-bit, most likely 2048-bit. Rambus specified that the manufacturing process of the HBM3 is 7nm, so the energy requirements will be decreased even further. In the spec graph, Rambus also mentions that the memory modules will integrate “complex design architectures”, which could mean that some sort of 3D layering might be employed.

Since these are the early development stages for HBM3, the standard could be launched in 2019 at the earliest, so GDDR6 can easily get a consolidated market presence meanwhile.

XBM3 spec graph released by Rambus (Source: ComputerBase)
XBM3 spec graph released by Rambus (Source: ComputerBase)

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Bogdan Solca
Bogdan Solca - Senior Tech Writer - 1541 articles published on Notebookcheck since 2017
I first stepped into the wondrous IT&C world when I was around seven years old. I was instantly fascinated by computerized graphics, whether they were from games or 3D applications like 3D Max. I'm also an avid reader of science fiction, an astrophysics aficionado, and a crypto geek. I started writing PC-related articles for Softpedia and a few blogs back in 2006. I joined the Notebookcheck team in the summer of 2017 and am currently a senior tech writer mostly covering processor, GPU, and laptop news.
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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2017 12 > HBM3 memory expected to feature 4 Gbps transfer rates and GDDR6-like bandwidth
Bogdan Solca, 2017-12- 7 (Update: 2017-12- 7)