Shailendra Jain, Surhud Khare, Satish Yada, V. Ambili, Praveen Salihundam, S. Ramani, S. Muthukumar, M. Srinivasan, Arun Kumar, Shasi Kumar, R. Ramanarayanan, V. Erraguntla, J. Howard, S. Vangal, S. Dighe, G. Ruhl, Paolo A. Aseron, H. Wilson, N. Borkar, V. De, S. Borkar
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A 280mV-to-1.2V wide-operating-range IA-32 processor in 32nm CMOS
Near-threshold computing brings the promise of an order of magnitude improvement in energy efficiency over the current generation of microprocessors [1]. However, frequency degradation due to aggressive voltage scaling may not be acceptable across all single-threaded or performance-constrained applications. Enabling the processor to operate over a wide voltage range helps to achieve best possible energy efficiency while satisfying varying performance demands of the applications. This paper describes an IA-32 processor fabricated in 32nm CMOS technology [2], demonstrating a reliable ultra-low voltage operation and energy efficient performance across the wide voltage range from 280mV to 1.2V.
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