3 ms·

Because electrical signals, required for coordination, can only travel so far in one cycle.

• chrisseaton 7y ago
  Right, so you need more cycles to complete each operation, don't you? Why can't you run the same number of cycles though?
  • notacoward 7y ago
    Memory ordering isn't the kind of thing that can be neatly separated from your instruction scheduler, register file, etc. Some of the communication and checking that's necessary to maintain strong ordering has to be handled within each unit each cycle. I'm probably doing a poor job explaining it, though. Maybe someone even closer to these issues can do better.