Computer Architecture csc 306 All you need to know about Computer architecture at a start



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Comp architecture 1

How to know a Computer Speed

Cycle time is the reciprocal of clock frequency.

A bus operating at 133MHz has a cycle time of 7.52 nanoseconds:


Now back to the advertisement ...

133,000,000 cycles/second = 7.52ns/cycle


How to know a Computer Speed


A system bus moves data within the computer. The faster the bus the better. This one runs at 400MHz.

The microprocessor is the “brain” of the system. It executes program instructions. This one is a Pentium (Intel) running at 4.20GHz.


How to know a Computer Speed

  • Large main memory capacity means you can run larger programs with greater speed than computers having small memories.
  • RAM = random access memory. Time to access contents is independent of its location.
  • Cache is a type of temporary memory that can be accessed faster than RAM.

How to know a Computer Speed


and two levels of cache memory, the level 1 (L1) cache is smaller and (probably) faster than the L2 cache. Note that these cache sizes are measured in KB.

This system has 256MB of (fast) synchronous dynamic RAM (SDRAM) . . .



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