iXBT Labs - Computer Hardware in Detail






NEC NR-7900

Specification of the NEC NR-7900:
Firmware version 1.22
Recording modes Disc-At-Once, Track-At-Once, Session-At-Once, MultiSession, Packet Writing
Recording formats CD-ROM, CD-ROM XA, CD-Audio,CD Extra, CD Text, CD-I, CD-Bridge,Photo-CD, Video CD, Hybrid CD
Read/write support in Raw-mode RAW-DAO " supported
RAW-DAO Write Simulation " unsupported
CD+G RAW-DAO " supported
RAW-SAO " supported
RAW-SAO Write Simulation " supported
Average access time 98 ms
CD-R recording 4x, 8x, 16x (CLV)
20x, 24x (Zone-CLV)
CD-RW recording 2x, 4x, 10x
Buffer underrun error prevention technology JustLink
Interface Ultra DMA 33
Reading 40x max (6000 KBytes/s)
Buffer size 2048 KBytes
Production date November 2001
Manufacturer Malaysia
Price as tested up to $100

The drive ships in an OEM package.

The box contains:

  • 16x CD-R and High Speed CD-RW (4x-10x) from Primedisc ;
  • 4 screws and an Eject Stick
  • Analog cable for connecting the drive to a sound card;
  • IDE cable.

Character and method of recording:

In our lab we had a preproduction sample.

That is why there is neither a user manual nor software for CD recording. Although the recorder had some software with it, it wasn't officially announced when we received it, and NEC workers recorded on a CD-R an unreleased version of the Nero Burning ROM - v5.5.5.7. This version was used in the tests.

The tests show that the drive doesn't like much our technological cyanine CD-R discs with ATIP 4M. There was an error at the first minutes of recording (note that these low-quality discs are recorded at 4x, which is the low limit of the most of high-speed CD-RW drives).

Thus, instead of the cyanine disc we tried a CD-R from SKC in a bulk package. But the recorder considered it too poor in quality as well for recording at 24x and suggested the recording was implemented at 3 other speeds with the highest being 16x.

The appearance is somewhat square and rectangular, though the most of manufacturers today move toward roundish forms. However, such square forms create a NEC's own style.

On the front panel you can find one LED which works in one-color mode, a headphones jack, a mechanical volume control, an emergency ejection hole and a rectangular tray button which produces a sharp click when pressed. When going out the tray buzzes. The rear panel has a digital-out.

Ejected discs are quite warm. But the drive works rather quietly, without vibrating much.

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