20s doesn’t matter when it’s someone else’s hardware (eg spammers using malware installed on victim machines). It’s also nonsense to compare the computational

20s doesn’t matter when it’s someone else’s hardware (eg spammers using malware installed on victim machines). It’s also nonsense to compare the computational cost of N seconds of sustained, maxed out useless computation to the milliseconds of compute time needed to decode an image, or the minimal power usage of waiting on network data.