I just purchased a "lightly" used Gigabyte 280x graphics card. From the looks of his other Amazon.com items, it seems as though he intended to mine, but never got around to it.
I have an old i7 920, overclocked to 3.3 ghz. The motherboard has SATA 2, and PCI-E 2.0 x16. I'm running 12 gb of ram...