Rubin (microarchitecture)

Rubin

Launching	2H 2026 [1]
Designed by	Nvidia
Manufactured by	TSMC
Fabrication process	3NP or 3PN
Specifications
Memory support	HBM4
History
Predecessor	Blackwell
Successor	Feynman

Rubin is a microarchitecture for graphics processing units (GPUs) by Nvidia.

Microarchitecture

Announced at Computex in Taipei in 2024 by CEO Jensen Huang, it is named after the astrophysicist Vera Rubin and will consist of a GPU named Rubin and a CPU named Vera. The chips will be manufactured by TSMC using a 3 nm process and will use HBM4 memory. It is scheduled for release in Q3 of 2026. ^[2] Nvidia is using Blackwell GPUs to accelerate the design of Vera, Rubin, and Rubin's successor, Feynman. ^[3]

Rubin is said to have 50 petaflops performance in FP4 (4-bit floating point math, often used for AI), increased from 20 petaflops in Blackwell, while Rubin Ultra will double the performance of Rubin with 100 petaflops. ^[4]

Rubin Ultra

At Nvidia GTC 2025 it was announced that Rubin will be followed by an improved Rubin Ultra architecture in 2027. ^[5] It would be in effect two of the Rubin cores connected together. ^[4]

References

1. "NVIDIA Kicks Off the Next Generation of AI With Rubin — Six New Chips, One Incredible AI Supercomputer". NVIDIA Newsroom. NVIDIA. Retrieved 5 January 2026.
2. Shilov, Anton (2025-11-20). "Nvidia hints at early Vera Rubin launch — on track for $500 billion in GPU sales by late 2026 despite losing China". Tom's Hardware. Retrieved 2025-12-15.
3. Nick Flaherty (March 18, 2025). "Nvidia accelerates Feynman chip design, manufacture on Blackwell GPU". eenews.
4. Sean Hollister (March 18, 2025). "Nvidia announces Blackwell Ultra GB300 and Vera Rubin, its next AI 'superchips'". The Verge.
5. Jarred Walton (March 20, 2025). "Nvidia shows off Rubin Ultra with 600,000-Watt Kyber racks and infrastructure, coming in 2027". Tom's Hardware.