Power draw levels on the G1.Sniper 87 are slightly up compared to a lot of the boards here. At stock, you can see the numbers fall more in line with the Z87X-OC Force, which draws a bit more power at both idle and load.
Overclocking brings an increase in numbers as you'd expect; overall though, they're not too high. Any quality power supply would deal with this kind of setup.
At stock, you can see the G1.Sniper Z87 runs a little warmer than our other GIGABYTE offerings, but cooler than the ASRock at both idle and load. Looking at our overclocked numbers, you can see that the idle number jumps just slightly.
The load number one though, does jump significantly, coming in at 92c. We've still got a bit of room to move, but at this number you'd probably prefer to shave a few MHz off the clock, and drop the load temperature by a strong 10c+.