Four Overclocked GeForce GTX 580 Cards, Rounded Up

Overclocking Benchmarks

Despite each card's different shipping specifications, they all demonstrate similar maximum stable overclocks:

As you can see, the overclocking results fall very close across the playing field, except for the strange advantage shown by MSI’s Twin Frozr II/OC at 2560x1600. This is an odd and inexplicable result that manifested itself with repeated testing.