OCR J277 1.1.2: CPU performance
The free BugBot lesson that teach this point, a robot to try it on, and the past-paper questions that test it.
What it covers
Why does one computer feel fast and another slow? Three features of the CPU make the biggest difference: how fast its clock ticks, how many cores it has, and how much cache memory it holds. This lesson measures each one with models you can change, and asks where each helps and where it does not.
- Clock speed
- Cores
- Cache
- Putting it together
Or do it in the simulator, with tasks that mark themselves
Lessons that teach it
- F9.5 CPU performance Logic and computer systems
Clock speed, cores and cache, measured with models.
Try it on a robot
The task from F9.5 CPU performance, running here. Change the program and press Run.
The specification is OCR's own document; this page says which of our lessons teach point 1.1.2 and is not endorsed by the board.