How many clocks are needed for a fastest ADD instruction of latest Intel CPU

Look at Intel's latest Optimization Guide for its CPUs. It will tell you.

Certainly look at the current Itanium products too. The more interesting question for some time, with multi-issue architectures, is how MANY add's can you do in a clock cycle :)

Hi fpga, I really have looked at the latest CPU products software programming manual and found no column of number of clocks is specified for any kind of instructions, a big difference from 386, 486 and maybe Pentium manuals. Launching multiple integer instruction per clock may be the reason why there is no such specification in manual.

So I can ask such a different and similar question: On average, how many integer instructions per clock can the latest Intel CPU run?

For example, for a 4GHz CPU, can it run 24G integer instructions if, on average, 6 instructions can be launched per clock?

Thank you.

Weng

It is clear that you have *not* looked at the Intel Optimization Reference Manuals, because those *do* specify clock cycles.

Hi Ben, Thank you. I will have a look at the Intel Optimization Reference Manuals.

I have looked at Intel Software Programming Manual.

Weng