[heavenlyblue]

What about performance-per-watt?

[sitkack]

Main memory accesses dominate energy consumption, so the lower your total memory bandwidth the less energy an algorithm will take.

https://www.researchgate.net/figure/Data-movement-is-overtak...

The chart above shows a 1000x (3 orders of magnitude base 10) increase in energy consumption relative to a register move (it really should be called copy).

[celrod]

The bigger the vectors, the better the performance per watt.