LONDON In what would amount to a setback for GlobalFoundries Inc. (Sunnyvale, Calif.), microprocessor vendor Advanced Micro Devices Inc. plans to use a rival foundry to make its Fusion processors, according to a Digitimes report.
The move would be particularly pointed because AMD (Sunnyvale, Calif.) divested its manufacturing operations to help form GlobalFoundries and AMD still owns a minority stake in the new foundry on the block. A second reason to take umbrage might be AMD's apparent haste to get off a silicon-on-insulator (SOI) process and on to bulk CMOS even if that involves stepping back to 40-nm.
GlobalFoundries is already sampling AMD's Llano processor, which combines CPU and graphics cores on the same chip, on a 32-nm SOI process. The chip combines four CPU cores with gate-first high-k metal gate technology, 11 copper layer of interconnect separated by low-k dielectric.
AMD now plans to use a bulk CMOS 40-nm process at Taiwan Semiconductor Manufacturing Co. Ltd. (Hsinchu, Taiwan) for its Fusion processors with back-end services provided by Siliconware Precision Industries Co. Ltd. (Taichung, Taiwan) the report said citing unnamed "industry sources."
GlobalFoundries has a bulk CMOS 28-nm process coming in a couple of variants.
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