It looks like the only differences (except the extreme line) in the 900 line, i.e. the 920, 940, 950, 960 is only the processor speed. They all have the same amount of L3 cache and other options but there is a huge difference in price. It seems like like there is no real justification to spend hundreds more for just a few extra MHz. It is easy enough to OC to the same speed as the 960 anyway. Does anyone know if there is any real difference in the mark3D scores?