SCIENCE & TECH: Could Megawatt-class AI server racks usher a new generation of atto nuclear cells as Nvidia race towards 1000-GPU setups

• Rubin Ultra GPUs previewed at Nvidia GTC 2025 with Kyber rack mockups
• Each NVL576 rack may include 576 GPUs across four internal pods
• Projected power draw reaches 600kW with performance targets of 15 EFLOPS

At Nvidia GTC 2025, the company gave a preview of what its future data center hardware could look like, showcasing mockups of its Rubin Ultra GPUs housed in the Kyber-based NVL576 racks.

These systems are expected to launch in the second half of 2027, and while that’s still some way off, Nvidia is already laying the groundwork for what it describes as the next phase of AI infrastructure.