1.04+CPUs

Section 1.4 toc include component="pageList" hideInternal="true" homeAtTop="on" limit="50"

SubSection 1.4 CPUs Unit 4 Topic A Explain the purpose and characteristics of CPUs and their features

UPDATE: 2/27/12 - When creating your Wiki Pages, make sure to define any words that may be technical. For example, DDOS needs to be defined. Not every user will be able to know this from memory. At the very least, LINK it to another site that has the definition. Delete this after you read it. =Types of CPUs = -CPU stands for central processing unit; it is the "brains" of the computer. It's a chip that processes instructions,manipulates data, and controls the interactions of the other circuts in your computer. A CPU has three components: a control unit, one or more execution units, and registers.


 * ==AMD ==
 * stands for Advanced Micro Devices
 * typically uses Socket A (also known as Socket 462)
 * list of AMD sockets
 * ==Intel ==
 * uses a socket called LGA 775
 * list of Intel sockets
 * ==ARM architechture==
 * **Tegra-**combines A CPU(central processing unit) a GPU(graphics processing unit),northbridge, southbridge, and a memory controller onto one package.
 * @http://en.wikipedia.org/wiki/Tegra

Hyperthreading

 * an Intel technology that enables a single processor to execute two streams of instructions at the same time,as if it were two processors.

=Multi-core = = = Difference Between Dual Core & Dual Processor =On-Chip cache= Video on how Cache works
 * single computing component with two or more independent actual processors (called "cores"), which are the units that read and execute program instructions
 * ==Dual core ==
 * two separate physical computer processors in the same on the same component
 * ==Quad core==
 * a processor with four "cores". [[image:http://people.sc.fsu.edu/~jburkardt/latex/fsu_2008/quad_core.png width="330" height="245"]]
 * cache is a type of RAM, used to make access to memory faster taking some of the load off of main RAM
 * ==L1==
 * this cache is built into the processors execution unit,giving the cache a zero-wait state.
 * L1 cache is very small which allows it to be very fast
 * ==L2==
 * this type of cache is built onto the motherboard.
 * ==L3==
 * specialized memory that works hand-in-hand with L1 and L2 cache to improve computer performance.
 * L3 cache can be far larger than L1 and L2, and even though it’s also slower, it’s still a lot faster than fetching from RAM
 * L3 is typically built onto the motherboard

>> []
 * ==Speed (real vs. actual)==
 * real speed is your clock speed
 * actual speed is the performance you actually get out of your processor


 * ==32-bit vs. 64-bit==
 * think of 32-bit as a two lane highway, it allows two lanes of data to travel, so 64-bit would be double that. Instead of two lanes of travel you have four, this increases you data transfer rate.
 * 32-bit- size of the data bus is 32-bits wide
 * 64-bit- 64-bit bus is twice as big so the system can move twice as much data around
 * @http://www.infopackets.com/news/hardware/2006/20060824_32_bit_vs_64_bit_systems_whats_the_difference.htm


 * ===Data bus===
 * bus refers to a communication pathway within a computer
 * the data bus transfers data between the CPU and RAM

Created by Mailisa Edited by Mailisa, JJ