Green computing aims to reduce the environmental impact of computing through more efficient use of computing resources and proper disposal of electronic waste. It began in 1992 with the Energy Star program which certified energy efficient electronics. Green computing approaches include virtualization, power management, efficient power supplies, storage optimization, efficient graphics cards, LED displays, recycling electronics, and telecommuting. Recent implementations include the black search engine Blackle, low power Zonbu and Fit PC computers, and thin clients like Sun Ray. The goals are to minimize hazards, maximize energy efficiency and recyclability. Advantages include energy savings, cost savings, and lower emissions over time, while disadvantages include high initial costs and uncertainty about performance impacts.

1. Green computing
 Presented by
V . Mari Selvi Nivetha
17cse01
A . Ragavi
17cse04

2. CONTENT
WHAT IS GREEN COMPUTING?
HISTORY OF GREEN COMPUTING
WHY GREEN COMPUTING?
APPROACHES OF GREEN COMPUTING
TYPES OF GREEN COMPUTING
RECENT IMPLEMENTATION IN GREEN COMPUTING
GOALS OF GREEN COMPUTING
ADVANTAGES OF GREEN COMPUTING
DISADVANTAGES OF GREEN COMPUTING

3. WHAT IS GREEN COMPUTING?
 Green Computing is the environmentally responsible
and eco-friendly use of computers and their resources.
 Green Computing is the study of designing ,
manufacturing , using and disposing of computing
devices in such a way that reduces environmental
impact.
 Green computing, also called green technology, is the
environmentally responsible use of computers and
related resources. Such practices include the
implementation of energy-efficient central processing
units (CPUs), servers and peripherals as well as reduced
resource consumption and proper disposal of electronic
waste (e-waste).

4. HISTORY OF GREEN COMPUTING
 Green Computing started off as a program known as
Energy Star.
 It was first created back in 1992.
 The U.S Environment Protection Agency were the
ones who started Energy Star.
 Energy Star awarded products if they saved energy,
while they were still getting the job done.
 The energy star program was applied to all kinds of
electronic devices such as printers, televisions,
etc. Even refrigerators use energy star!!
 Energy Star created the sleep, standby mode on a
computer when it is on, but not being used.
 As it developed over time, it began to get the name
green computing.
 One of Green Computing’s latest programs is tactical
instrumentalists. It is not very good because it
mainly focuses on cost rather than helping save
energy. Over the years, green computing has helped
save energy for a lot of people.

5. WHY GREEN COMPUTING?
 Minimizing energy consumption.
 Purchasing green energy.
 Reducing the paper and other consumables
used.
 Minimizing equipment disposal requirements.
 Reducing travel requirements for
employees/customers.
 Environmental awareness.

6. APPROACHES TO GREEN
COMPUTING
 VIRTUALIZATION :
 Computer virtualization is the process of running two or more logical computer
systems on one set of physical hardware.
 Computer virtualization refers to the abstraction of computer resources.
 With virtualization, a system administrator could combine several physical
systems into virtual machines on one single, powerful system, thereby unplugging
the original hardware and reducing power and cooling consumption.
Virtualization can be classified into 3 categories, namely:-
 Desktop Virtualization
 Server Virtualization
 Storage Virtualization

7. APPROACHES TO GREEN
COMPUTING
 POWER MANAGEMENT:
ACPI(Advanced Configuration and Power Interface) allows an operating
system to directly control the power saving aspects of its underlying
hardware .This allows a system to automatically turn off components such
as monitor and hard drives after a set periods of inactivity.
Power management for computer system are desired for many reasons ,
particularly:
 Prolong battery life for portable and embedded systems.
 Reduce cooling requirements.
 Reduce noise.
 Reduce operating costs for energy and cooling.

8. APPROACHES TO GREEN
COMPUTING
 POWER SUPPLY:
Climate savers computing initiative promotes energy saving and
reduction of greenhouse gas emissions by encouraging development and use of
more efficient power supplies.
Desktop computer power supplies (PSUs) are generally 70–75%
efficient, dissipating the remaining energy as heat. An industry initiative
called 80 PLUS certifies PSUs that are at least 80% efficient; typically these
models are drop-in replacements for older, less efficient PSUs of the same
form factor. As of July 20, 2007, all new Energy Star 4.0-certified desktop
PSUs must be at least 80% efficient.

9. APPROACHES TO GREEN
COMPUTING
 STORAGE:
There are three available, all of which
vary in cost , performance , and capacity.
Example : Desktop hard drive , Laptop hard
drive , Solid state drive.

10. APPROACHES TO GREEN
COMPUTING
 VIDEO CARD:
 A fast GPU (graphics processing unit)may be the
largest power consumer in a computer.
Energy efficient display option include:
• No video card- use a shared terminal , shared thin
client , or desktop sharing software if display required.
• Use motherboard video output-typically low 3D
performance and low power.
• Reuse an older video card-that uses little power , many
do not require heatsinks or fans.
• Select a GPU based on average wattage or performance
per watt.

11. APPROACHES TO GREEN
COMPUTING
 DISPLAY:
o CRT monitors typically use more power than LCD
monitors . They also have significant amount of
lead.
o LCD monitors typically use a cold-cathode
fluorescent bulb to provide light for the display .
o LCD monitors uses three times less when active ,
and ten times less energy when in sleep mode.
o Some newer displays use an array of light
emitting diodes(LEDs)in place of the fluorescent
bulb , which reduces the amount of electricity
used by the display .

12. APPROACHES TO GREEN
COMPUTING
 MATERIALS RECYCLING:
o Parts from outdated systems may be
salvaged and recycled through certain
retail outlets and municipal or private
recycling.
o Computing supplies , such as printer
cartridges , papers and batteries may be
recycled as well.

13. APPROACHES TO GREEN
COMPUTING
 TELECOMMUTING:
o Telecommuting technologies
implemented in green computing
initiatives have advantages like
increased worker satisfaction ,
reduction of greenhouse gas emissions
related to travel and increased profit
margins.
o Employees working from home reduce
the fuel emission that is created using
commuting by vehicles.

14. TYPES OF GREEN COMPUTING
SOLAR POWER SYSTEM:
 In this program we utilize the sunlight and
produce the Solar Power for personal and
commercial usage.
 Canada, Spain and California have first
position for implementing this technology.
This is great achievement for green
technology.
 When talking about green
computing, photovoltaic solar panels are a
fine example, as they can easily power a
computer lab due to their feature to
convert electricity directly into electrical
energy.

15. TYPES OF GREEN COMPUTING
WIND TURBINE PROGRAM:
 Other great type is Wind Turbine system because
with the help of this system anyone can
generate electricity power.
 After embedding wind turbine has no bad effect
to environment. It decrease the carbon dioxide
emissions.
 There is a fantastic example of computing
facility run by wind turbines, which can be seen
on Arizona State University's Global Institute,
and although this solution tend to be a bit
expensive, it is a great way to reduce energy
costs, but what's more important, it reduces
carbon dioxide emissions significantly.

16. TYPES OF GREEN COMPUTING
GEOTHERMAL POWER:
 This is also exclusive type of green
technology.
 With the help of this Geothermal plant
can be generated electricity, and people
can utilize of this power in daily usage
such as heating and cooling house.
 When talking about the computing sector,
its ability to cool is definitely worth
considering on server farms that generate
constant heat and therefore require
constant cooling.

17. RECENT IMPLEMENTATION IN
GREEN COMPUTING
'BLACKLE’ (Search-
engine)
• Blackle search-engine site powered by
Google Custom Search and created by
Tony Heap of Heap Media, which aims
to save energy by displaying a black
background and using grayish-white
font color for search results.
• This is because when your computer
screen is white, the energy consumes
74W, whereas when the screen black, it
consume only 59W.

18. RECENT IMPLEMENTATION IN
GREEN COMPUTING
ZONBU COMPUTER
• Zonbu computer is a new and a very energy
efficient PC.
• The Zonbu just consumes one third of the
power of a typical light bulb.
• The Device runs the Linux OS using a 1.2
GHz Processor and 512 MB RAM.

19. RECENT IMPLEMENTATION IN
GREEN COMPUTING
FIT PC
• Fit-PC is the size a paperback and
absolutely silent, yet fit enough to
run Windows XP or Linux.
• Fit-PC only 5 Watts, consuming in
a day less power than a traditional
PC consumes in 1 hour.

20. RECENT IMPLEMENTATION IN GREEN
COMPUTING
SUN RAY THIN CLIENT
• Thin clients like SUN RAY consume far
less electricity than conventional
desktops.
• A SUN RAY on a desktop consumes 4 to 8
watts of power , because most of the
heavy computation is performed by a
server.
• Sunrays are particularly well suited for
cost-sensitive environments such as call
centers , education , healthcare ,
service providers and finance.

21. RECENT IMPLEMENTATION IN
GREEN COMPUTING
Asus Eee PC & ultra
portables
• Small size.
• Fairly low-power CPU.
• Compact screen.
• Low cost.
• Uses flash memory for storage.

22. GOALS OF GREEN COMPUTING
The goal of green computing is to attain
economic viability and improve the way
computing devices are used.
There are different objectives of green
computing are:
 To minimize the implementation of
hazardous products.
 More production of energy efficiency.
 To use the recyclability of wasted
product and factory wasted products.
 To design proper algorithms for
improve the computer’s efficiency

23. ADVANTAGES OF GREEN
COMPUTING
 Energy saving.
 Environmentally friendly.
 Cost-effective(pays over time).
 Save more money per year.
 Can give you a tax right off.
 Green computing techniques will
actually translate into a much lower
carbon dioxide emission.
 Reduce the risk existing in the laptops
such as chemical known to cause
cancer, nerve damage and immune
reactions in humans.

24. DISADVANTAGES OF GREEN
COMPUTING
 Rapid technology change.
 Some computers that are green
may be considerably
underpowered.
 Green computing could actually
be quite costly.
 High start up cost.
 Lack of human resources and skills.
 Uncertainty about performance
impacts

25. THANK YOU