No problems are observed with the burning and reading of the discs. Both devices successfully get the job done. Now we have only to compare the quality of the resulting discs.

The quality check yields very similar results – the total number of errors is almost the same with both drives. The difference is only in the distribution of the errors along the surface of the disc. The new model produces most of the errors on the innermost tracks, while the previous model has most errors in the outermost tracks. The quality of the discs is anyway superb in both cases.

TA Test for the DVD-RW 4x disc burned by Plextor PX-716A


 

The jitter rate is going down steadily from the inner tracks of the disc towards the outer ones. The jitter is overall lower than with the disc burned at 2x, so we can say that the DVD-RW 4x disc has a higher quality.