The most affordable of all the ASRock’s new 9 series mother board is the Zx7-Extreme4.
The Zx7-Extreme4 board offers an impressive 12-phase CPU VRM, two PCI-Express 3.0 x16 slots (x8/x8 when both are populated), one PCI-Express 2.0 x16 (electrical x4), and three PCI-Express 2.0 x1. Its storage connectivity includes eight SATA 6 Gb/s ports, from which two can mod into a SATA-Express connection with the conveniently placed SATA-E driver port; and one M.2 slot. Other features include Intel-made gigabit Ethernet, ASRock Purity sound with audio-grade capacitors and ground-layer isolation, and dual-UEFI BIOS. ASRock’s dual-BIOS implementation isn’t automated, and you have to manually switch between the two EEPROMs using a 2-way switch.