GreenBy: Vaibhav D. Sawant

New Roll No : 19

Old Roll No: 35

Computing

Quick Recap

˚ What is green computing?

˚ Why green computing and why go green?

˚ Reasons for adopting green solution.

˚ Approaches to Green Computing

Approaches to Green Computing˚ Virtualization˚ Algorithm Efficiency˚ Power Management˚ Power Supply˚ Display˚ Storage˚ Material Recycling˚ Telecommuting

Role Of IT Vendors

˚ Apple

˚ Google

˚ Nokia recycling

˚ Dell’s Asset Recovery

Disposal and recycling of IT equipment

IT products

• Production of IT products involves multiple toxinsand energy―Semiconductors―Displays―Printers―Batteries

• Energy involved in manufacturing an IT product is greater than the product will use in its lifecycle

• 20 – 50 million tons of computer equipment and cell phones discarded in landfills each year (putting mercury and lead into the environment)

• Estimates of PCs and cell phones recycled range from 1 – 12%.

• Recycling electronic equipment can help prevent 70% of toxic waste in landfills.

Recycle electronics

Even More Ways to be Green

Consider a “Green” Managed Hosting/Colocation Facility˚ 1.GreenHouseData.com˚ 2.Rackspace.com

˚ Consider taking steps to extend the life of the current equipment vs. buying new

˚ Replace single function devices with multifunction devices

˚ Consider following LEED certification guidelines

Green Web Surfing

Greener Google Browsing: Blackle.com

Donates almost 100% of its

profits from Google Search

to various environmental-

themed causes.

Implementation of Green Computing

BLACKLE

Blackle

˚ Blackle is a website powered by Google Custom Search and created by Heap Media, which aims to save energy by displaying a black background and using grayish-white font color for search results.

˚ The concept behind Blackle is that computer monitors can be made to use less energy by displaying much darker colors. Blackle is based on a study which tested a variety of CRT and LCD monitors.

Blackle

˚ There is dispute over whether there really are any energy saving effects, especially for users of LCD screens, where there is a constant backlight.

˚ This concept was first brought to the attention of Heap Media by a blog post, which estimated that Google could save 750 megawatt hours a year by utilizing it for CRT screens.

˚ The homepage of Blackle provides a count of the number of watt hours claimed to have been saved by enabling this concept.

Blackle

˚ Is the search page, Blackle.com, really an energy efficient alternative to Google?

˚ The theory is websites with black background save energy. That claim is based on an assumption that "a given monitor requires more power to display a white (or light) screen than a black (or dark) screen."

˚ Is this a blatant green washed marketing ploy, or an earnest energy saving tweak for something we use every day?

Testing the internet: where monitor power consumption is potentially wasted

˚ To find out, PCSTATS hooked up an Extech Power Analyzer to a 19" CRT and a 19" LCD.

˚ One explorer window, set to full screen (1280x1024) was opened to each of the following websites.

˚ Blackle's claims appear to hold water, although the difference is just 17.7W and 3.8W for CRT and LCD respectively. What that adds up to over the course of a year, for every second you spend doing a search on Google is massive.

The resulting monitor power consumption to display a webpage fluctuated as shown below:

19" CRT ADI Microscan

19" LCD Samsung 192MP

Google.com 83.5 Watts 38.6 Watts

Blackle.com 65.8 Watts 34.8 Watts

Blackle

˚ Expanding on the Blackle.com vs. Google.com question further, how many website designers out there have considered the electrical impact of their creations on monitor power consumption?

˚ Before comparing Google vs. Blackle we wouldn't have thought that the colours used in web design would have a significant impact on energy consumed by the display device.

Blackle

˚ Yet faced with the lower energy usage that Blackle.com proves is possible with crafty use of dull dark colours and stationary images, we got to wondering.

˚ What is the carbon footprint of some of the most popular websites out there? How about websites that focus on environmentally friendly design, products, lifestyles and energy sources? Are there websites which disseminate this timely and important information using an power sensitive colour scheme?

Search Engines - Measuring Website Energy Efficiency

Website 19" CRT ADI Microscan E66

19" LCD Samsung 192MP

Blackle.com 65.8 W 34.8 W

Google.com 83.5 W 38.6 W

Live.com 82.7 W 38.5 W

Yahoo.com 81.2 W 38.9 W

Ask.com 81.6 W 38.4 W

AOL.com 81.6 W 38.8 W

Monitor Power Consumption - Black & White

Color19" CRT ADI

Microscan E6619" LCD Samsung

192MP

Reference - full screen white

85.1 W 38.4 W

Reference - full screen black 63.6 W 34.0 W

Rules of Thumb

˚ There are a great many web designs on the internet and from the simple monitor power consumption tests shown here, a few general rules of thumb seem to hold:A) LCD monitors consume a lot less power compared to CRT displays and are the better, energy efficient monitor choice.B) Websites with darker colours tend to cause the monitor to consume less power.C) Flash and other moving bits cause monitor power draw to increase.D) The worst result was a solid white screen (~85.1W on CRT / 38.4W on LCD)E) The best result is a solid black screen (~63.6W on CRT / 34.0W on LCD)

Future Of Green Computing

˚ The plan towards green IT should include new electronic products and services with optimum efficiency and all possible options towards energy savings.

Conclusion

˚ So green computing is a mindset that asks how we can satisfy the growing demand for network computing without putting such pressure on the environment.

˚ There is an alternative way to design a processor and a system such that we don't increase demands on the environment, but still provide an increased amount of processing capability to customers to satisfy their business needs.

˚ Green computing is not about going out and designing biodegradable packaging for products. Now the time came to think about the efficiently use of computers and the resources which are non renewable.

Thank You.