- CD-R Format

The drive supports 8X, 16X, 24X, 32X, 40X and 48X (CAV) writing speeds.

According to Nero CDSpeed, the reported average speed when recording at 48X is 36.47X.

- CD-R Recording Times

We created an 80min data compilation with Nero Burning Rom and recorded it on a 700MB disc. The writing performance varies according to the inserted media. Below is a chart depicting all recording times with various media.

As the above graph indicates, not all four inserted media were burned at the max 48X speed. TY media was burned at 32X in 3:37mins, while BenQ CDR media was burned at 48X in exactly 3:00mins.

- Other features

- CD-RW Format

The ND-4551A supports 4X, 10X, 16X (CLV), 24X (Z-CLV) and 32X (Z-CLV) rewriting speeds, with Ultra Speed Rewritable Media (US-RW).

Below you can see the Nero CD-DVD Speed writing simulation test with blank 32x US-RW media from Mitsubishi Chemicals.

The drive, when recording at 32X , reported an average writing speed of 29.6X.