Actually, most desktop ivy bridge cpus don't support HD 4000. Only the i7s, i5-3570K, -3475S and i3-3225 support HD 4000, the rest have HD 2500. It's similar for the sandy bridge cpus, only 2 each of i7, i5 & i3 support HD 3000, and the rest are HD 2000.
I understand it would take time and...