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SK Hynix considers Intel as the next-generation HBM substrate chip supplier

According to Citrini analyst Jukan, SK Hynix is working on diversifying the foundry suppliers for the substrate chips used in high bandwidth memory (HBM), which are constructed by vertically stacking multiple memory chips. It is reported that the company is considering outsourcing part of the substrate chip production for the seventh generation HBM, namely HBM4E, to Intel's foundry. So far, SK Hynix has relied entirely on TSMC for outsourcing substrate chip production.This move is seen as an effort to establish a multi-supplier foundry strategy to reduce the concentration of the supply chain on TSMC while enhancing SK Hynix's bargaining power in pricing. According to industry insiders on August 31, SK Hynix is advancing a plan where the substrate chips for HBM4E may be jointly manufactured by TSMC and Intel, potentially starting from the HBM4E generation.As the market expects the cost burden of substrate chips for HBM4E to further increase. Since HBM products are mainly covered by long-term supply agreements (LTA), SK Hynix also finds it difficult to immediately pass on the higher foundry costs to customers by raising product prices. Therefore, industry observers believe that if Intel ultimately joins SK Hynix's substrate chip supply chain, the company will gain more options in terms of cost competitiveness and supply stability.

Vitalik releases research on "local mixing" cryptography: exploring next-generation obfuscation techniques, which may become a new foundational primitive in cryptography

Ethereum co-founder Vitalik Buterin published a new article titled "Obfuscation (Part 3): Local Mixing," which delves into a cryptographic obfuscation technique being explored—"Local Mixing." He claims it may become a new foundational cryptographic tool following elliptic curves, RSA, and lattice-based cryptography.Vitalik states that current mainstream obfuscation techniques mainly rely on complex mathematical assumptions, often resulting in extremely high computational overhead. In contrast, Local Mixing adopts a completely different approach, not relying on elliptic curves, large integer factorization, or lattice cryptography. Instead, it draws on experiences from symmetric cryptography and hash function design, continuously shuffling, reconstructing, and hiding circuit structures to eliminate information leakage while maintaining functionality.The Local Mixing technique primarily includes steps such as reversibility, hardening, mixing, splitting, crossing walk, and "gadgetization." By introducing random structures into the circuit, rearranging logic gates, and employing nonlinear hiding mechanisms, it makes it difficult for attackers to recover the original computational logic.Vitalik points out that this technology is still in its early stages, with security not yet validated over the long term and facing challenges such as random attacks and linear analysis. However, he believes that Local Mixing represents a completely new path for cryptographic exploration, aiming to construct more efficient indistinguishable obfuscation (iO) schemes.If breakthroughs in Local Mixing technology are achieved, it could lead to new quantum-resistant public key encryption schemes and promote the development of general obfuscation techniques. The field still requires years of cryptanalysis and optimization validation, but AI-assisted research may significantly accelerate this maturation process. Vitalik states that obfuscation technology is seen as the "final frontier" of cryptography because, theoretically, other cryptographic primitives can be constructed based on obfuscation and one-way functions. Local Mixing may not only reduce the costs of traditional obfuscation schemes but could also become an important direction for future cryptographic infrastructure.

hot_img Cerebras releases the fourth generation AI inference system CS-4: performance doubled, power consumption doubled, more flexible deployment

Cerebras released its fourth-generation AI inference system CS-4 this week, based on the same 5nm WSE-3 wafer, achieving double the performance by doubling the clock frequency and power consumption. A single CS-4 cabinet accommodates 3 wafers (CS-3 has 2), featuring a modular "backpack" design that simplifies manufacturing and deployment, with a TDP of approximately 125 to 135kW. The CS-4 can provide an inference speed of nearly 4000 tokens/second/user, about twice that of the CS-3, and supports decomposed inference with heterogeneous systems such as AMD and AWS Trainium.Cerebras claims that the CS-4 offers about 2000 times the on-chip memory bandwidth of NVIDIA's Rubin (43PB/s), but the 44GB SRAM capacity remains unchanged, and long-context inference still requires multi-wafer stacking. For example, with the DeepSeek V4 Pro (1.6T parameters), approximately 20 systems are needed for a 1M context window, and about 40 systems are required for 256 concurrent users, corresponding to a CAPEX exceeding 20 million USD. Cerebras is collaborating with clients such as OpenAI and plans to achieve approximately double performance improvements each year, aiming for a 20-fold throughput increase by 2027. The "backpack" cabinet design of the CS-4 will continue into the next-generation "Nexus" platform.

Binance Research: Generation Z investors prefer ETFs, with lower trading frequency and leverage usage compared to other age groups

Binance Research data shows that Generation Z investors are gradually shifting towards long-term asset allocation tools such as ETFs. Compared to Millennials, Generation X, and Baby Boomers, their trading frequency is lower, and their preference for leverage is also weaker.Data indicates that at the beginning of August, ETFs accounted for 25% of the stock trading volume among Generation Z users. In July, the proportion of net inflows into stocks from ETFs for Generation Z reached 21.9%, up from 18.5% in June; during the same period, the proportion of individual stock investments decreased from 77% to 74.2%.Binance Research analyzed trading behaviors in direct stocks, tokenized stocks, and traditional financial perpetual contracts. The data shows that Generation Z's trading activity in all three asset classes is lower than that of other working-age groups.Among them, Generation Z's traditional financial perpetual contract accounts traded an average of 13 times per month, lower than the 17 times of Millennials and 16.5 times of Generation X. In direct stock accounts, 22% of Generation Z users have never sold stocks, higher than the 19% of Generation X and 9% of Baby Boomers.Among Generation Z accounts that bought but did not sell, the assets with the highest cumulative purchase amounts include Broadcom, Tesla, and Charles Schwab U.S. High Dividend Stock ETF.In terms of leveraged products, Generation Z shows a lower risk appetite. Data indicates that 88.2% of Generation Z's traditional financial perpetual contract accounts have never traded leveraged or inverse ETFs, higher than the 84.5% of Millennials and 85.9% of Generation X.Additionally, the tokenized stock market continues to expand. Data shows that Binance's bStocks recently briefly surpassed Kraken's xStocks, becoming the second-largest tokenized stock issuance platform globally. As of the latest data, Ondo Finance ranks first with approximately $972 million in tokenized stock value, while xStocks and bStocks are approximately $611 million and $580 million, respectively.
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