This document provides an overview of multi-core processors, including their history, architecture, performance advantages and disadvantages, applications, and future aspects. It discusses how multi-core processors contain two or more independent processors on a single integrated circuit to provide performance and productivity benefits beyond single-core processors. The document also compares different multi-core architectures and provides examples of applications that benefit from multi-core processing like video editing, gaming, and artificial intelligence.

1. Sindhu priya.s
ECE-’B’, I-YEAR,
pmu.

2.  Introduction
 History
 What do you mean by multi core?
 Multi core architecture
 Comparison of Different Architectures
 Performance analysis
 Advantages & Disadvantages
 Application
 Future aspect
 References of work
CONTENTS

3. • Multi-core processors represent a major evolution in
computing technology.
• They are several mostly independent cores which
work together in parallel
•performance and productivity benefits beyond the
capabilities of today’s single-core processors.
Introduction

4. •A multi-core microprocessor is one which combines two
or more independent processors into a single package,
often a single integrated circuit.
A Multi-core computing
• A dual-core device
contains only two
independent
microprocessors.
What do you mean by Multi core?

5. If multi means two or more, what types are there?
A dual-core
processor
contains two
cores.
A quad-core
processor contains
four cores.

6. •The first commercial dual core processor was IBM's
Power 4 processor for it's RISC servers in 2001.
•The first dual core processor for home use was
Intel's Pentium Processor Extreme Edition 840,
released in early April 2005.
•Less than two weeks later AMD brought their
Opteron 800 Series and Athlon 64 X2 processors to
market.
History

7. Multi core architecture

8. 8
Comparison of Different Architectures
CPU State
Cache
Execution
unit
Single Core Architecture

9. CPU State
Cache
Execution
unit
CPU State
Cache
Execution
unit
Comparison of Different Architectures
Multiprocessor

10. 10
Comparison of Different Architectures
CPUa State
Cache
Execution
unit
Multi-Core Architecture
CPU State
Cache
Execution
unit

11. 11
Comparison of Different Architectures
CPU State
Execution
unit
Multi-Core Architecture with Shared Cache
CPU State
Cache
Execution
unit

12. Performance Analysis

13. •Multi-tasking productivity
• it will work faster for certain programs
•PC security
•Cool and quiet
•The signals between different CPUs travel shorter
distances
Advantages

14. •They do not work at twice the speed as a normal
processor. They get only 60-80% more speed.
•The speed that the computer works at depends on
what the user is doing with it.
•They cost more than single core processors.
•They are more difficult to manage thermally than
lower-density single-core processors.
Disadvantages

15. Applications
• Video editing
• Encoding .
• 3D gaming.
• Powerful graphics solution
• Optimized productivity titles, such as AVG's
virus-scanning software.

16. Next-generation software applications will
require the performance capacity provided by
multi-core processors. Software destined to
break barriers in the user experience, like as
• Voice recognition
• Artificial intelligence (AI)
That will be only possible by multi-core processors
Future aspect

17. References
• R. Merritt, “CPU Designers Debate Multi-core Future”, EETimes Online, February 2008,
http://www.eetimes.com/showArticle.jhtml?articleID=206105179
• R. Merritt, “Multicore Puts Screws to Parallel-Programming Models”, EETimes Online, February
2008, http://www.eetimes.com/news/latest/showArticle.jtml?articleID=206504466
• R. Merritt, “X86 Cuts to the Cores”, EETimes Online, September 2007,
http://www.eetimes.com/showArticle.jtml?articleID=202100022
• R. Merritt, “Multicore Goals Mesh at Hot Chips”, EETimes Online, August 2007,
http://www.eetimes.com/showArticle.jtml?articleID=201800925
• P. Frost Gorder, “Multicore Processors for Science and Engineering”, IEEE CS, March/April 2007
• D. Geer, “Chip Makers Turn to Multicore Processors”, Computer, IEEE Computer Society, May
2005 [5] L. Peng et al, “Memory Performance and
It has been taken from various sources