INTERESTING: Only 3 months after Rubin Ultra was announced at GTC 2026, the original 4-die Rubin Ultra has been cancelle…
SemiAnalysis Twitter · SemiAnalysis (@SemiAnalysis_) · 2026-06-29
SemiAnalysis reveals that NVIDIA cancelled its original 4-die Rubin Ultra GPU just three months after its GTC 2026 announcement due to manufacturing execution concerns, with the replacement product delivering approximately half the performance.
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Extraction
Topics: nvidiarubin-ultraai-hardwaregpu-roadmap
Claims
- NVIDIA cancelled the original 4-die Rubin Ultra GPU only three months after announcing it at GTC 2026.
- The cancellation was driven by manufacturing execution concerns.
- The replacement product retains the 'Rubin Ultra' name but is approximately half the size of the original design.
- The new Rubin Ultra delivers approximately half the real-world performance of the originally announced version.
Key quotes
Only 3 months after Rubin Ultra was announced at GTC 2026, the original 4-die Rubin Ultra has been cancelled due to manufacturing execution concerns.
The new 'Rubin Ultra' is half the size/~ half the real-world performance of the original Rubin Ultra.