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Cpu- Central Processing Unit

In: Computers and Technology

Submitted By secret718
Words 567
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| CPUCentral Processing Unit | | | | NT1110- | | This video was about the components and functions that take place in the CPU. The video creates a visual of more or less where the components are, how they connect and what’s happening inside the CPU. The Information in this video was very specific and explained all the different elements of a CPU very well. I learned that there are a lot of things happening all simultaneously in the CPU. I also learned about the different components, their functions and placements of them inside. What I thought to be a little confusing was the details about Cache. All the different locations of the cache and different kinds of cache are too similar but I’m sure over time with more experience and hands on activities I will get more familiar with it. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

| CPUCentral Processing Unit | | | | NT1110- | | This video was about the components and functions that take place in the CPU. The video creates a visual of more or less where the components are, how they connect and what’s happening inside the CPU. The Information in this video was very specific and explained all the different elements of a CPU very well. I learned that there are a lot of things happening all simultaneously in the CPU. I also learned about the different components, their functions and placements of them inside. What I thought to be a little confusing was the details about Cache. All the different locations of the cache and different kinds of cache are too similar but I’m sure over time with more experience and hands on activities I will get more familiar with it. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

Two major Manufactures are: * Intel * AMD
Organization
* System Bus- Carry’s information in and out CPU * When enters CPU, it’s called the Font side Bus (Usually uses a 64 bit wide data path) * Connects to controllers which control basic functions, components and communication * Internal Bus (usually a 32 bite wide data path) connects Controllers to ALU * ALU- Preforms complex calculation(CPUs can include one or more) * Back side bus connects the ALU to the Cache and the Cache to the Controllers * Cache- Internal memory

Speeds * Processor- measured in GHz * System Bus- measured in MGz * Multiplier- Ratio between processor & system bus (System bus x Multiplier = processor speed)
Differences between: * Multiprocessing-using multiple ALU’s * Multiple Processors- more than one CPU on single mother board * Dual Core Processors- Incorporating multiple processors with multiple ALU’s inside a single CPU

Cache (memory) * SDRAM (Static RAM)- Higher quality and hold memory without being refreshed * DRAM (dynamic RAM)- must be refreshed
Three types of cache: * L1- on processor chip * L2- Inside processor housing but not on it * L3- Inside processor housing but further away from chip
Some sockets are: * LGA 775- Intel- Pentium 4 & Celeron * Socket 75- AMD- Athlon Sempron & Opteron * ZIF- Uses a lever to lock CPU into socket with no damage
Heat
* Optimal Temp- 90-110 F (100 F) 32-43 C (40 C) * Thermal Compound- A Cream like substance used to form a seal between CPU & Heat sink * Heat Sink-Finger like projection which sits on top of thermal compound, that draws away heat from CPU towards fan * Fan- Sits on top of CPU or on top of the heat sink which is on top of the CPU, that draws heat away from CPU and out computer * You can check Temp through CMOS or boot process/screen…...

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