> At one point I believe the Pentium 4 had a twenty-stage pipeline, yikes! Modern pipeline lengths aren't documented publicly as often as they could be, but Ze

> At one point I believe the Pentium 4 had a twenty-stage pipeline, yikes! Modern pipeline lengths aren't documented publicly as often as they could be, but Zen 1 was a 19 stage pipeline, and it performed great for the time. But, I think Pentium 4's full pipeline was 31 stages. Regardless, I think CPU designers these days have better tools and techniques for dealing with long pipelines.