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Processor upgrade information:
Motherboard supports the following processor upgrades:
note: Only socket AM2+ processors are supported with this motherboard.
AMD Phenom II Quad-Core
AMD Phenom II Triple-Core
AMD Phenom Quad-Core (A) 9xxx series (AM2+)
AMD Phenom Triple-Core (T) 8xxx series (AM2+)
AMD Athlon X4
AMD Athlon X3
AMD Athlon X2 (B) (AM2+)
As for a graphics card, the board has a PCI-e x16 slot so just about any PCI-e card should work, provided you have a power supply that can handle it.
Motherboard Specifications, M2N68-LA (Narra5)
Best Graphics Cards For The Money: May 2015