Today's Knowledge
- Clock Speed
- Cache Size
- Number of Cores
What you need to know:
Cores
-
A core acts as an additional processing unit
(basically a CPU on a CPU)
-
A
core contains an ALU, control unit and registers
-
CPUs
with multiple cores have more power to run multiple programs at the same time.
The CPU with six cores will have
more power to run multiple programs at
the same time than the quad-cord does, so you could say that the six-core
processor is the more powerful computer… Although other factors such as clock
speed, RAM and cache also play a massive factor to the
overall outcome of a PCs performance.
Clock
speed
-
Is measured in Mhz (megahertz) or Ghz
(Gigahertz).
-
Indicates the number of fetch-decode-execute
cycles the CPU can perform in a second.
-
1(Ghz) CPU is doing 1 billion cycles per second.
3(Ghz) CPU is doing 3 billion cycles per second.
-
You
can increase a CPU clock speed, which will make your computer run faster - this
is called overclocking.
Cache
(Static Random Access Memory)
-
Cache stores
copies of data and instructions from memory that is waiting
to be used by the CPU.
-
It holds common data that it thinks the CPU
is going to access over and over again.
-
It is faster to transfer to and from cache than transferring data to and
from the RAM.
-
The
greater the cache you have, the more instructions can be stored, the faster your
computer can perform.
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