Looking at power draw we can see that the GIGABYTE offering sits a little higher than the ASRock motherboard in both idle and load. Overclocked, though, we see that idle power draw sits at the same level while only load is bumped up.
On the heat front the GIGABYTE puts out some strong numbers at idle with the overclock not effecting idle temps. Load numbers are up, though, and we can see overclocked we're tipping over 90c.
This is probably a bit too warm for most people. You'll no doubt want to drop the voltage back a little and the overclock to try and sit closer to the 70c area, which is where most people feel comfortable when it comes to overclocked CPUs.