"They are considerably cheaper then gigabyte or asus."
There might be a reason for that.
Electronics (and that includes computers parts of course) is one area where paying for quality is a must. Yeah, you could get a cheaper mobo, PSU, GPU, but more often than not, you'll regret it sooner rather than later.
aziraphale basically said it. There's probably a reason for it.
Research, research, research.