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SK hynix teases HBM3 memory has 665GB/sec bandwidth: 44% faster HBM2e

SK hynix details HBM3 memory: in-development memory hits 665GB/sec of bandwidth with 5.2Gbps I/O speed, 44% faster than HBM2e.

@anthony256
Published Fri, Jun 11 2021 7:03 PM CDT   |   Updated Sat, Jul 10 2021 3:41 PM CDT

SK hynix has teased its next-generation memory, with some early performance numbers teasing some huge speeds. JEDEC still needs to formalize the HBM3 standard, which shouldn't be too far away now.

SK hynix teases HBM3 memory has 665GB/sec bandwidth: 44% faster HBM2e 01 | TweakTown.com
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Back to SK hynix, which has its next-gen HBM3 memory under development and it is already hitting 665GB/sec with 5.2Gbps I/O speeds. This means that in its current form, HBM3 memory has 44.6% more bandwidth and 44.4% more I/O speed over the still-fast HBM2e standard.

SK hynix explained: "SK hynix leads the HBM market with ambitions for even faster HBM solutions: Our HBM3, under development, will be capable of processing more than 665GB of data per second at 5.2Gbps in I/O speed. A table illustrating how SK hynix's product specifications evolve between HBM2E and HBM3".

If you thought 665GB/sec was all the next-gen HBM3 memory was capable of, especially in a world when NVIDIA's new GeForce RTX 30 series cards have GDDR6X that has upwards of 1TB/sec (1000GB/sec) of memory bandwidth -- this isn't everything HBM3 can do.

We're not going to see single HBM3 stacks, where companies that use HBM3 memory in their chips will see somewhere between an insane 2.66TB/sec of memory bandwidth, right through to something that could finally play Crysis with an even-more-insane 3.99TB/sec of memory bandwidth.

Anthony joined the TweakTown team in 2010 and has since reviewed 100s of graphics cards. Anthony is a long time PC enthusiast with a passion of hate for games built around consoles. FPS gaming since the pre-Quake days, where you were insulted if you used a mouse to aim, he has been addicted to gaming and hardware ever since. Working in IT retail for 10 years gave him great experience with custom-built PCs. His addiction to GPU tech is unwavering.

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