File photo: An AMD sign in Markham, Ontario, June 24, 2008. Photo: Raysonho @ Open Grid Scheduler / Grid Engine / Wikimedia Commons / CC0 1.0. Cropped and resized.
Advanced Micro Devices introduced another graphics processor for customers building artificial intelligence systems Thursday, while its shares rose about 6% in afternoon trading.
Nasdaq’s AMD quote, checked at 2:54 p.m. Eastern, showed a last price of $585.78, up +32.88, or +5.95%. Nasdaq labeled the quote Nov 12, 2026 2:54 PM ET. That is an intraday snapshot, not a closing price.
In its Thursday product announcement, AMD introduced the Instinct MI450X GPU for its Helios rack-scale platform. The new option has 288 gigabytes of HBM4 memory per GPU. AMD said it offers the same core computing capabilities, memory bandwidth and connections between chips and systems as the MI455X.
The choice is aimed at customers whose AI workloads do not need the additional memory capacity of the MI455X. Buyers can choose a memory configuration that better fits the size of the AI models they run. AMD said that could help customers meet performance goals while managing operating costs.
AMD also released results from its own testing of the MI455X, not the new MI450X. The company reported throughput of 21,333 tokens per second per GPU on DeepSeek-R1 using an MLPerf Inference Offline configuration. AMD said that was up to 30% higher than Nvidia Vera Rubin NVL72’s published MLPerf Inference v6.1 Closed Division result in the comparison it used.
The comparison uses AMD’s October testing against Nvidia results AMD retrieved on November 11. It is not an independent MLPerf-certified AMD submission or a finding that AMD’s chips are faster on all workloads. AMD says results can vary with the model, hardware configuration, software and other factors.
Both GPU options use the same Helios rack-scale architecture and AMD’s ROCm software foundation. AMD’s MI450X product page lists November 12 as the launch date.
The product announcement and share-price move happened on the same day. The company’s release does not establish that the launch alone caused the stock’s gain.
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