Nvidia showed off a mockup of its future Rubin Ultra GPUs with the NVL576 Kyber racks and infrastructure at GTC 2025. These are intended to ship in the second half of 2027, more than two years away, and yet, as an AI infrastructure company, Nvidia is already well on its way to planning how we get from where we are today to where it wants us to be in a few years. That future includes GPU servers that are so powerful that they consume up to 600kW per rack.
The current Blackwell B200 server racks already use copious amounts of power, up to 120kW per rack (give or take). The first Vera Rubin solutions, slated for the second half of 2026, will use the same infrastructure as Grace Blackwell, but the next Rubin Ultra solutions intend to quadruple the number of GPUs per rack. Along with that, we could be looking at single rack solutions that consume up to 600kW, as Jensen Huang verified during a question-and-answer session, with full SuperPODS requiring multi-megawatts of power.
Kyber is the name of the rack infrastructure that will be used for these platforms.
