box 1, 6950 card = 334 m/h @ 875/1315/factory voltage   Auto fan, 61 degrees   Shaders locked
box 2, 6850 card = 185 m/h @ 875/1200/factory voltage   Auto fan, 55 degrees

can squeeze a little more out of both cards, but at these settings both machines are still very responsive for desktop use

also considering unlocking the 6950, but heard mixed reports re success with my card so am unsure...