Performance and reliability of Integrated Circuits within computing systems

by Edward Wyrwas , TechOnline India - November 17, 2011

When a system is used in a high-reliability environment, failures and even degradation can have a significant impact. Do you know how operating parameters will impact device reliability...

Abstract

High performance computer systems, including those used for instrumentation, measurement, and advanced processing require high reliability, high quality complex integrated circuits (ICs) to ensure the accuracy of analytical data they process.  Microprocessors and other complex ICs (i.e. GPGPU) are predominantly considered the important components within these systems.  They are susceptible to electrical, mechanical and thermal modes of failure like other components on a printed circuit boards, but due to their complexity and roles within a circuit, performance-based failure can be considered an even larger concern. Stability of device parameters is key to guarantee a system will function according to its design.  Modifications to operational parameters of these devices through over- or under-clocking can either reduce or improve overall reliability, respectively, and furthermore directly affect the lifetime of the system which it is installed in.  

The ability to analyze and understand the impact that specific operating parameters have on device reliability is necessary to mitigate risk of system degradation, which will affect bus speeds, memory access, data retrieval, and even cause early failure of that system or critical components within it.  An accurate mathematical approach which utilizes semiconductor formulae, industry accepted failure mechanism models, Physics-of-Failure (PoF) knowledge and more importantly, device functionality has been devised to access reliability of those integrated circuits vital to system reliability.

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