CPUs Flashcards
Manufacturers
AMD, Intel are the big ones
CPU
Central Processing Unit
What does a CPU do?
Performs calculations on raw data
Byte
8 bits
bit
1 or 0
machine language
language that cpu speaks
Speed
TOP speed potential
Ghz billion calculations per second
System Crystal
Quartz Oscillator - frequency acts like a metronome and pushes the CPU, multiplies frequency by CPU multiplier and runs CPU at higher speed
Motherboard speed
About max speed is 400 Mhz
Overclocking
turning up multiplier on unlocked cpu making it faster than the speed it is tested and rated to run at.
Hyper-threading
One pipeline that can handle multiple tasks at the same time
Multi-Core
More than one cpu core on one chip (each core acts as its own cpu)
Cache
Extremely fast memory (SRAM) ON the CPU chip for CPU use, fed by RAM, avoids pipeline stalls by keeping things ready for the CPU
pipeline stall
Line of code from RAM isn’t at CPU when it needs to be, hundreds of CPU cycles lost waiting for the code from RAM.
Level 1 Cache
~64k ram runs at speed of CPU