Are you kidding me? That's only true if the constraint can be removed in a hardware upgrade. Apparently latter day Xeons are not much better at hiding memory latencies than Zen and no longer outrun it as much like they did Bulldozer on other operations which made the latencies irrelevant.

In other words, he's reached peak CPU. As in a faster unit will not speed it up, and more cores can only do that to a point. Amdahl law (power efficiency variant) and also memory controllers say hello.