im Amazed by the hashing speed of my 7870. I mean, 440 Mhash without any voltage tweaking is great i think.
Pretty good, but the 7970 is still a little better.
440 Mh/s for ~$370 vs 700 Mh/s for ~$560 means that the 7870 is running at about $0.84/MH whereas the 7970 is at roughly $0.80/MH.
Not a huge difference, but significant.
Of course this doesn't take power into account. I'm not sure of the wattage differences between the 7870 and 7970.
maybe someone can enlighten us?