Rubin (microarchitecture)

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

Rubin

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

Microarchitecture

Announced at Computex in Taipei in 2024 by CEO Jensen Huang, it is named after 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 mass production in late 2025 and will be available for purchase in early 2026.^[1][2] Nvidia is using its own Blackwell GPUs to accelerate the design of Vera and Rubin, as well as Rubin's successor, Feynman.^[3]

Rubin is stated 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]