Here's one of the first glimpses of a socket LGA1151 motherboard featuring both DDR3 and DDR4 memory slots, the Hi-Fi B150Z5 by BIOSTAR. The board supports up to 16 GB of DDR3L-1600, and up to 32 GB of DDR4-2133. The board is driven by Intel's mid-range B150 Express chipset, and should do just fine for gaming builds with single graphics cards. Expansion slots include one PCI-Express 3.0 x16, one PCIe 2.0 x16 (electrical x4), three legacy PCI, and one PCIe 2.0 x1. Storage connectivity includes six SATA 6 Gb/s (from which two wire out as SATA-Express 16 Gb/s). BIOSTAR's Hi-Fi 6-channel onboard audio solution, gigabit Ethernet (Intel controller), and six USB 3.0 ports, make for the rest of its connectivity. The board features dual-UEFI BIOS.

The B150M-D3H, based on Intel's mid-range B150 Express chipset, offers a neat feature-set at a potentially sub-$100 price point. This full-width micro-ATX board offers a 6-phase CPU VRM, four DDR4 DIMM slots, supporting dual-channel DDR4-2666 memory, expansion slots that include one PCI-Express 3.0 x16, two legacy PCI, and one PCI-Express 2.0 x16 (electrical x4). Storage connectivity includes a 32 Gb/s M.2 slot, two SATA-Express 16 Gb/s ports, and six SATA 6 Gb/s ports. D-Sub, DVI, and HDMI make up the display outputs; six USB 3.0 ports, gigabit Ethernet and 8-channel HD audio make for the rest of it.