Green Computing is the concept to improve environmental conditions. Green Computing has begun to spread in the past few years, gaining increasingly popularity. It includes manufacturing, designing and efficiently using computers and associated subsystems- such as LED,RAM, Processor, Mouse and Keyboard with minimum impact on the environment. We are doing the study and practice of developing Information Technology resources in an environment friendly manner such that our environment get protected. As we all know usage of electronic devices is very popular these days, of which Laptops and Tabs are the most common. Surveys were conducted to analyze power consumption, pattern of devices, components like RAM, Rom processors and LED displays. Furthermore recommendations were made to make them more energy efficient. To promote the idea of green computing, energy star rating were introduced for electronic devices. The more is the star rating, the less is the power consumption. This type of computing can facilitate us to safe and make healthy environment all over the world. Present study will help us to take some initiatives to save vast amount of power which is wasted on very large scale currently under the field of computers/ electronics industry.