This reminds me of this article.
China Breaks Through Restrictions with Advanced Chiplet Strategy: 3D-IC Breakthrough in Chinese Ethereum Miner
TechInsights Reveals Design of the Jasminer X4 with DBI Hybrid Bonding. to learn more.
TechInsights made a remarkable discovery on the Jasminer X4 Ethereum miner ASIC, developed by China-based crypto mining machine manufacturer Jasminer. This design marks the industry’s first-ever application of DRAM to logic direct bond interconnect (DBI).
TechInsights found hybrid bonding technology in Yangtze Memory Technologies Company’s (YMTC) Xtacking 3.0 architecture, where logic circuits were bonded to a separate wafer with storage cells in their 3D NAND products. Jasminer X4 uses this technology differently—it represents the first instance where the logic circuits have been bonded directly to DRAM.
The Jasminer X4 showcases the ability of a Chinese company, under trade restrictions, to combine matured technologies to create high-performance, cutting-edge applications creatively. A sizable 32 mm × 21 mm logic die employs the earlier XMC (Wuhan Xinxin Semiconductor Manufacturing Co.) planar 40/45 nm CMOS technology. The large die is patterned using two masks, which could represent a design workaround for a reticle constraint. The flip chip is assembled within the package.
Additional findings covered in the Disruptive Event Brief:
To learn more about these findings, and stay tuned for additional findings.
- Xilinx Zynq FPGA on the board containing the Mining ASIC.
- Jasminer X4 is the first Ethereum miner ASIC to utilize a storage mining design.
so 25nm DRAM stacked on 55nm logic chip to build neural network computing. compared to CPU version, speed is 9x and energy efficiency 300x.2022年,达摩院与紫光把25纳米DRAM堆叠在55纳米逻辑芯片上,构建了神经网络计算以及推荐系统里的匹配加速等。系统带宽达到1.38TBps,性能上,相比CPU版本,速度提升9倍,能效比超300倍。
so this should be considered mature technology by this point可以认为3D堆叠技术已经成熟,国内企业已经具备成熟的实现方案。最近的杀手级应用,譬如Transformer,图计算,图数据库兴起对带宽延迟的刚性需求在兴起,或许预示着3D Stacked DRAM与逻辑的商业化时机已经到来。
Am i missing something here? This doesn't seem like revolutionary technology. Then again, I don't have access to the article.