5.5 Steamroller: An x86-64 core implemented in 28nm bulk CMOS

Kevin Gillespie,Harry R Fair,Carson Henrion,Ravi Jotwani,Stephen V Kosonocky,Robert S Orefice,Donald A Priore,Jonathan White,Kathryn Wilcox

Solid-State Circuits Conference Digest of Technical Papers（2014）

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摘要

The AMD two-core x86-64 CPU module, codenamed “Steamroller”, contains 236 million transistors implemented in 28nm high-κ metal gate (HKMG) bulk CMOS using 12 levels of metal. It is designed to operate from 0.8 to 1.45V. The CPU module occupies 29.47 mm2, which includes two independent integer cores, two instruction decode units and shared instruction fetch, floating-point, and 2MB 16-way L2 cache units (Fig. 5.5.7). Along with the second instruction decode unit, this design includes a larger shared 96KB 3-way instruction cache and a 10KB L2 branch target buffer for improved single-threaded performance and multi-threaded throughput compared to a previous 32nm AMD x86-64 CPU codenamed “Bulldozer” [1].

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关键词

cmos digital integrated circuits,cmos integrated circuits,cache storage,microprocessor chips,amd two-core x86-64 cpu module,amd x86-64 cpu,bulldozer,l2 cache units,steamroller,high-κ metal gate bulk cmos,instruction cache,instruction decode units,multi-threaded throughput,second instruction decode unit,size 28 nm,size 32 nm,transistors,voltage 0.8 v to 1.45 v

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