I don't know if it's wrong and how you know it is wrong, but i think it's a good hypothesis/explanation. Do you disagree with this? Where am i wrong? If it is a 55nm why didn't they released it earlier. As i said before i think they could foresee what they could do in 55nm, so ati should have gotten the r790 ready, and released it as soon as 285 released as a response. Otherwise i don't see why would they delayed it so long.