ASUS P8P67-M EVO, P8P67, Maximus IV Extreme
ASUS P8P67-M EVO is a microATX board with 3 PCIe full length slots and 4 DIMM slots. It has Turbo V, MemOK, SATA 6Gbps, USB 3.0 support on board. The board supports CrossFireX
ASUS P8P67 is a full fledge ATX board discrete chipset mainboad. It has USB 3.0, SATA 6Gbps ports, 4 DIMM slots on board. It supports BT ! GO.
ASUS P8P67 Deluxe
The P8P67 Deluxe board has 3 full length PCIe slots for CrossFireX. it has 4 DIMM slots, SATA 6GBps, USB 3.0 and external USB 3.0 support.