More or less, a good motherboard is by brand. Brands such as Asus, AsRock (made by Asus), Gigabyte, and MSI are more or less the best. Even then you still have some bad boards. I hate saying this, but it is sometimes good to look at the reviews. Alot of people don't know what they are really talking about, but some people do. You just have to go with a good brand. Additionally, price makes a big difference. The biggest jump in quality is from a $50 board to a $100 board. You will get better as you go higher, but a good solid board can be picked up for around $130, and most people don't need to go more expensive.