This request was approved by the commission yesterday (September 18)-a $3.5 billion cash injection was already given the thumbs-up back in March. Mid-last month, the TSMC executive board sought approval from Taiwan's Investment Commission for an additional overseas spend (the Arizona operation is registered as a subsidiary company). Mass production at the Arizona foundry has been delayed into 2025 due to behind-schedule equipment installations and various workforce-related issues, but a limited trial run is reported to begin early next year.
TSMC has gained the Taiwanese government's approval to invest $4.5 billion in its main North American manufacturing hub-Fab 21 is located in the greater Phoenix area. Intel uses its own fabs for processor dies, and will have to use its own IP.
AMD's tech has been collaboratively developed with TSMC, and hinges on a TSMC-made SoIC packaging tech that facilitates high-density die-to-die wiring between the CCD and cache chiplet. Intel's approach to 3D-stacked cache will be different at the hardware level compared to AMD's, Gelsinger stated in his response. On client processors such as the Ryzen X3D series, the cache provides significant gaming performance uplifts as the larger 元 cache makes more of the game's rendering data immediately accessible to the CPU cores while on server processors such as EPYC "Milan-X" and "Genoa-X," the added cache provides significant uplifts to memory intensive compute workloads. The stacked cache operates at the same speed as the on-die cache, and so the combined cache size is visible to software as a single contiguous addressable block of cache memory.ĪMD has used 3D-stacked cache to good effect on its processors. The technology involves expanding the on-die last-level cache (元 cache) of a processor with an additional SRAM die physically stacked on top, and bonded with the cache's high-bandwidth data fabric. Intel CEO Pat Gelsinger, in the Q&A session of InnovatiON 2023 Day 1, confirmed that the company is developing 3D-stacked cache technology for its processors.
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