Rumor
Nvidia Rubin GPU rumored to feature 2.3kW TDP variant with high-spec Samsung HBM
Monday, February 9, 2026 at 12:52 PM
A potential roadmap for NVIDIA Rubin GPUs suggests two thermal design power (TDP) tiers, with a high-end 2.3kW model utilizing advanced Samsung HBM and a standard version operating between 1.7kW and 1.8kW.
Context
Nvidia is reportedly preparing a high-performance variant of its next-generation Vera Rubin GPU featuring a massive 2.3kW TDP, up from the standard 1.8kW model. This premium chip will likely utilize high-spec HBM4 memory exclusively supplied by Samsung, signaling a major shift in the AI memory market. Samsung has reportedly secured this lead by leveraging its 1c DRAM process, providing superior performance and density over rivals SK Hynix and Micron.
The strategic power increase aims to outpace AMD’s upcoming Instinct MI455X, which targets a 1.7kW envelope. The extra 500W of headroom allows for record memory bandwidth of 22.2 TB/s and higher sustained clocks for intensive AI training. Scheduled for a 2H 2026 rollout, these extreme power requirements are forcing a data center shift toward liquid cooling, as total rack-level consumption for these systems is expected to exceed 350kW.
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