The main differences in motherboards are features, NOT performance, they really ALL run identical as far as speed.....
The different chip sets from Intel add more features, and, enable support for OCing...
- The robustness of the CPU power supply regulation & filtering is a differentiator
- quality of audio chip
- on LAN port or 2
- number of SATA port 6Gb/s & # 3Gb/s
- number of USB ports 3.0 & # 2.0
- number of PCI-E slots and number of PCI lanes per slot (you usually want at least 2 the run x8 / x8
- WiFi on-board
- Bluetooth on-board