The cost is a rate, like $2 per hour, not a purchase price. So faster CPUs get work done more quickly and may justify a higher cost per hour. Ah, the graph is

The cost is a rate, like $2 per hour, not a purchase price. So faster CPUs get work done more quickly and may justify a higher cost per hour. Ah, the graph is wacky, but the text makes sense, looks like a disconnect: 1. C4A Axion: $2.16 reported cost per hour, test took average of 9 seconds per run: cost approximately 0.005 dollars. 2. T2A Ampere Altra: $1.85 reported cost per hour, test took average of 17 seconds per run: cost approximately 0.009 dollars. 3. C4 Xeon Platinum EMR: $2.37 reported cost per hour, test took average of 17 seconds per run: cost approximately 0.011 dollars. So the C4A costs a bit more ($2.16 vs $1.85) but gets approximately perf/$ is around 2x in favor of the C4A.