Newegg offers the Gigabyte Intel Z170 LGA 1151 ATX Motherboard, model no. GA-Z170-HD3, for $89.99. This $10 mail-in rebate cuts it to $79.99. With $2.99 for shipping, that's the lowest total price we could find by $7. It features support for up to 64GB of RAM, one PCI Express 3.0 x16 slot running at x16, one PCI Express 3.0 x16 slot running at x4, six SATA 6Gb/s connectors, three SATA Express connectors, one M.2 PCIe connector, four USB 3.0 ports, two USB 2.0 ports, and HDMI. Rebate expires October 31.