1.8 The Pentium 4 Prescott processor, released in 2004, had a clock rate of 3.6 GHz and voltage of 1.25 V. Assume that, on average, it consumed 10 W of static power and 90 W of dynamic power. The Core i5 Ivy Bridge, released in 2012, had a clock rate of 3.4 GHz and voltage of 0.9 V. Assume that, on average, it consumed 30 W of static power and 40 W of dynamic power. 1.8.1 For each processor find the average capacitive loads. ➡ Capacitive load = 2 x Dynamic power / (voltage^2 x clock rate) 1.8.2 Find the percentage of the total dissipated power comprised by static power and the ratio of static power to dynamic power for each technology. → Total dissipated power = Dynamic power + static power Find the ratio of static power to total power AND the ratio of static power to total power. 1.8.3 If the total dissipated power is to be reduced by 10%, how much should the voltage be reduced to maintain the same leakage current? Note: power is defined as the product of voltage and current. ➡ (new static power + new dynamic power) / (old static power + old dynamic power) = 0.9 ➡ Use Pdynamic = 1/2 x C x V² x Clock rate Pstatic =V x Ileak (Pstatic static power, Ileak: leakage current)

1.8 The Pentium 4 Prescott processor, released in 2004, had a clock rate of 3.6 GHz and voltage of 1.25 V. Assume that, on average, it consumed 10 W of static power and 90 W of dynamic power. The Core i5 Ivy Bridge, released in 2012, had a clock rate of 3.4 GHz and voltage of 0.9 V. Assume that, on average, it consumed 30 W of static power and 40 W of dynamic power. 1.8.1 For each processor find the average capacitive loads. ➡ Capacitive load = 2 x Dynamic power / (voltage^2 x clock rate) 1.8.2 Find the percentage of the total dissipated power comprised by static power and the ratio of static power to dynamic power for each technology. → Total dissipated power = Dynamic power + static power Find the ratio of static power to total power AND the ratio of static power to total power. 1.8.3 If the total dissipated power is to be reduced by 10%, how much should the voltage be reduced to maintain the same leakage current? Note: power is defined as the product of voltage and current. ➡ (new static power + new dynamic power) / (old static power + old dynamic power) = 0.9 ➡ Use Pdynamic = 1/2 x C x V² x Clock rate Pstatic =V x Ileak (Pstatic static power, Ileak: leakage current)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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