(nicehash)
As much electricity as… When, when?
Sorry
habs corrected
It needs a little more electricity for mining, but in both cases it is usually 100% utilized, but even more intensive for mining
It consumes the same or more electricity than when playing
The power consumption depends on how much the card is used. If you're playing a graphics-intensive game, it will use more power. To find out the load ("utilization"), you can search the Internet for analysis tools (e.g. HWMonitor).