By Topic

IBM POWER7+ design for higher frequency at fixed power

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

9 Author(s)
Zyuban, V. ; IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY, USA ; Taylor, S.A. ; Christensen, B. ; Hall, A.R.
more authors

The IBM POWER7+™ microprocessor is the next-generation IBM POWER® processor implemented in IBM's 32-nm silicon-on-insulator process. In addition to enhancing the chip functionality, implementing core-level and chiplet-level power gating and significantly increasing the size of the on-chip cache, the chip achieves a frequency boost of 15% to 25% compared with its predecessor at the same power. To achieve these challenging goals and deliver a serviceable power-frequency limited yield (PFLY), the IBM team made significant innovations in the post-silicon hardware-tuning methodology to counteract the inherent process variability and developed new PFLY models that account for several sources of variability in power and frequency. The paper describes the new methodology and the models, provides analysis of the sources of variability and their impact on power and frequency, and describes the work done to achieve correlation between the models and hardware measurements.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:57 ,  Issue: 6 )