ASRock A790GMH/128M

An Micro-ATX board on the AM3/AM2+/AM2 socket. Expansion covers 2 M.2 slots and 2 PCIe slots. Memory support covers 4 DDR4 slots up to 16GB total. Pick the board for its socket before anything else — chipset niceties come after.

At $85.79 it sits in the budget motherboard bracket. PlanMyPC's builder flags compatibility problems automatically and tracks the latest motherboard deals from multiple stores. ASRock backs the product through its standard warranty channels; check the listing for region-specific terms. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.