The grade division of the main board models is as follows:
1. Gigabyte motherboard divided into 7 series, 8 series, 9 series, the larger the number of performance is better
2. The general motherboard is divided into slots, AM2, AM3, AM3 (these are with AMD)
3. 155, 1156, 1366, 775 and other pins with INTEL
4. According to the size of the model, such as, 770, 870, 880, 890, the larger the more advanced. P43, P45, P55, P67 and so on.