Nvidia(US:NVDA)2025-08-25 03:24Summary of NVIDIA (NVDA US) GB300 and Future Developments Company Overview - Company: NVIDIA (NVDA US) - Focus: Updates on the GB300 compute tray design, power system changes, and future R&D projects related to the Vera Rubin architecture Key Points GB300 Compute Tray Design - The GB300 features a new design compared to the GB200 to avoid U.S. government scrutiny and improve production yields for ODM manufacturers. It utilizes a single large PCB design, reverting to the UBB + OAM structure from earlier HGX products [3][4] - The GB300 UBB is an 18-layer PTH board with an average selling price (ASP) of approximately $750–$800, supplied by WUS in mainland China and TTM in the U.S. The OAM has two variants: a high-end version with 2 Grace CPUs and 4 Blackwell GPUs, and a low-end version with 1 Grace CPU and 4 Blackwell GPUs, with ASPs around $100 [6] Power Design Changes - The GB300 uses 60A SPS products, reducing costs compared to the 90A SPS used in GB200. The average load for GB300 is assumed to be ~12A, requiring 516 SPS units per compute tray, compared to 300 for GB200 [10][11] - AOSL is expected to become the major supplier for GB300's VRM module, capturing 60–70% of the market share, while MPS may secure 20–30% [12] Heat Dissipation and Design Considerations - The increase in SPS units raises heat dissipation concerns, prompting NVIDIA to consider adding heatsinks to assist with cooling [13][14] - Vertical VRM designs are being considered but are not planned for immediate adoption due to higher costs and manufacturing complexities [15] Future Technology Upgrades - NVIDIA is evaluating gallium nitride (GaN) MOSFETs for the next-generation PDB module, with potential suppliers including TI, Inneon, and Innoscience. GaN modules are unlikely to be ready for the GB300 launch but may debut in subsequent systems [18] - The upcoming Vera Rubin architecture will feature a VR200 system with 72 GPUs, doubling the power consumption to ~260kW, necessitating an upgrade of the PSU from 5.5kW to 12kW [21][22] Material Innovations - For high-frequency signal transmission, NVIDIA is testing PTFE resin materials, which offer lower dielectric constant and dissipation factor, improving electrical performance [32][33] - Global players in PTFE CCL production include Rogers, AGC, and Doosan, with Rogers being the leading producer [36] Conclusion - NVIDIA is making significant advancements in its GB300 compute tray design and power systems, focusing on cost reduction, efficiency, and future technology upgrades. The company is strategically positioning itself for the upcoming Vera Rubin architecture while addressing challenges related to heat dissipation and material performance.