The NEC ND 4571A supports up to 48X CAV max speed for CD media, while offers up to 32X ZCLV for CD-RW media.

• CD-R Format

According to Nero CDSpeed, the drive confirmed the maximum 48X speed. The test started at 21.49X and finished at 48.04X, having an average speed of 36.41X. Click on the image below for an enlarged view.

• CD-R Recording Times

For the burning tests, we created an 80min data compilation through Nero Burning Rom, recording the data on several 700MB discs. The drive needed only 3:01 minutes to complete this task at the maximum 48X writing speed.

In the following graph we can see the recording times the NEC ND 4571A reported with various CD-R media inserted.

• CD-RW Format

The NEC ND 4571A supports 32X Z-CLV rewriting speed 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 starts the writing task at 20.11X and reaches a maximum of 32.05X having an average speed of 29.59X

- Overburning Test

The drive does not support this feature.