Vera Rubin NVL72 / Rubin Ultra and NVL576
NVIDIA Rubin Ultra and the NVL576 rack
The system after Vera Rubin NVL72 is already announced. Here's what's public, and how to think about it if you are signing a multi-year deal today.
What NVIDIA has said
Rubin Ultra NVL576 is planned for the second half of 2027, a year after Vera Rubin. It uses a new liquid-cooled rack design called Kyber that draws about 600 kW. NVIDIA quotes 15 exaflops of FP4 inference and 5 exaflops of FP8 training per rack, which it puts at 14x a GB300 NVL72 (DCD).
Why it matters now
A 600 kW rack doesn't fit in a hall built for 130 or even 230 kW. NVIDIA's own point was that land, power and engineering have to be lined up two to three years ahead (DCD). If your roadmap runs past 2027, ask operators today whether the site you're signing into can take Kyber.
Should you wait for it?
Usually not. Announced dates are for first shipments, and broad availability trails by quarters. Vera Rubin NVL72 is the system you can actually contract for the next two years. What you can do is negotiate for the future: upgrade rights, a first option on Rubin Ultra capacity, or a term that ends when you'd want to move.
Questions
When is Rubin Ultra coming?
How much power does a Kyber rack use?
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