The burn process proper is almost the same, but the drive took 12 seconds less to burn the disc with the new firmware. The graph is smoother, indicating that the Walking OPC mechanism corrects the operation of the device less frequently. The read graph is perfect, without any slumps in speed. Let’s now compare the quality of the resulting discs.

We want to applause to the BenQ development team: just compare the totals of C1 errors! Instead of the gigantic number of 228,353 we now have the negligible 12,442 errors, and there are no C2 errors at all. That’s an excellent performance!

The developers must have improved upon the OPC procedure, making it work just as it should. The asymmetry of the resulting disc has become “smoother” at the beginning, and that’s good, too. The jitter rate has improved, except the single spike at the moment the burn speed changes. So we can’t but admit that the disc written by the BenQ DW1620 with the help of the new firmware is of a highest quality – in fact, among the best discs we’ve recently seen.