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first_img Samsung develops NVIDIA's custom NVHBM to advance 8-layer high-speed HBM4E

According to reports from Seoul Economic Daily, Samsung Electronics is developing HBM4E (seventh generation) 8-layer products that meet NVIDIA's requirements, aiming to secure its position as a core partner in the supply of customized high-bandwidth memory NVHBM. This product reduces the stacking height compared to the originally planned 12-layer and 16-layer designs. The speed specifications proposed by NVIDIA are 17-18Gbps, which is about 20% higher than the speed of Samsung's initial HBM4E samples (14.4Gbps), and will be used for NVIDIA's publicly disclosed NVLink optimized specifications for NVHBM.The use of 8 layers, contrary to the previous logic of increasing capacity by adding more stacking layers in HBM, can reduce the difficulty of post-processing and yield pressure, which is beneficial for expanding supply and is seen as NVIDIA's strategy to alleviate memory shortages. NVHBM is expected to be applied starting with the next-generation AI GPU "Rubin Ultra," which is set to launch next year. This GPU will expand the interconnection scale between GPUs from a maximum of 72 to 576, enhancing overall computing power through hundreds of GPUs equipped with faster HBM.In the customized HBM market, Samsung is more competitive compared to SK Hynix and Micron, as NVHBM requires DRAM and the production capabilities of logic chip-based bare die designs, which Samsung can integrate. Industry insiders say that Samsung has verified the highest speed levels in HBM4, which can provide an advantage in speed competition.

first_img Ethereum developers propose upgrading the staking contract to defend against quantum attacks

According to CoinDesk, Ethereum researchers have proposed rebuilding the validator deposit contract to support a new cryptographic system and ultimately stop accepting deposits protected by the existing BLS signatures. This proposal targets the deposit contract, aiming to add a switch that prevents the network from accepting the currently relied-upon signature format.Currently, the contract only accepts BLS keys because their exact size is hardcoded, while the new draft allows for different key sizes, with each deposit tagged by the cryptographic system used, where BLS receives a tag of zero, reserving space for future schemes.If the proposal is approved, it will initially operate with BLS deposits, while other schemes can be registered simultaneously. Future decisions may permanently disable new BLS deposits, at which point validators who have staked using BLS keys will not disappear, but new validators will not be able to join using this method. Ethereum will ultimately need to change separately to inform validators how to check new signatures. This is part of the migration for validators, while another part is already in progress—EIP-8141 framework transaction proposals will allow regular Ethereum accounts to change the cryptographic method for approving transactions without changing their address.The urgency stems from research released in March by Google's Quantum AI research department, which outlined five quantum attack paths against Ethereum, putting over $100 billion in assets at potential risk. The Ethereum Foundation is advancing core protocol changes with a target around 2029. Currently, the amount of ETH staked in Ethereum is approximately 42.4 million, valued at about $10.4 billion.
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