Is this program good for overclocking?

^you need to read several guides and then do some overclocking in bios yourself before you will have a decent understanding.

Just do the work and read the guides, you'll save yourself time in the end by not having to relearn to overclock because you watched a video of someone who was clearly to lazy to write a guide and likely isn't very knowledgeable when it comes to overclocking.

Programs tend to put voltage to high and don't even come close to the max clocks for the chips.