17% of gamers spend over 12 hours a week playing games. So let's assume a person willing to spend $70k for a video card is in that bracket. And let's also assume they're upgrading once a year, because of course that person would. That's 1248 hours with this card, or $112.18 per hour.

The average cost of residential electricity in the US is 13.28 cents per kilowatt-hour (and roughly the same in Canada, after the exchange rate).

The 30-series recommends a 750-watt power supply, which burns .75 kilowatts every hour at max output. Meaning it costs roughly 10 cents an hour to run a 30-series equipped PC at max.

If you throw this in an old rig, and play it 12 hours a week for a year, each second of gaming cost you 3.1 cents, or 15.6 cents for five seconds.