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CPU Revision (Factors affecting the CPU (Cache (L1 cache is the smallest…
CPU Revision
Factors affecting the CPU
RAM size
The less Ram you have, the more virtual memory you will need (CPU performance will decline)
The more RAM you have the more programs you can open at once
Cache
L1 cache is the smallest yet fastest, then L2, then L3
CPU checks L1 cache first and works its way up to see if it contains the instructions required
Cache is faster than RAM therefore increases CPU performance
Cache is essential as it is found on the CPU therefore reducing the distance data has to travel
RAM is slower than the CPU
Clock Speed
Measured in Hertz(Hz)
3 GHz can perform 3 billion instructions per second
Produces heat with every cycle, heat sink is needed
CPU can be over clocked and run faster than designed, but extra cooling equipment is needed
Cores
Usually share L3
Different programs can be run on the different cores, therefore allowing a user to multitask
Different cores have their own low level cache
A big problem can be split between cores (parallel processing)
The Buses
Control Bus
Address Bus
Uni-Directional
Data Bus
Registers