Product comparison · 2 optical disc drives

NEC AD-7173A optical disc drive Internal DVD-RW vs NEC AD-7630 Black

20specifications compared
14differ
6identical
17known for one product only

Key differences

Interface
- AD-7173A optical disc drive Internal DVD-RW:EIDE/ATA
- AD-7630 Black:IDE/ATA
CD write speed
- AD-7173A optical disc drive Internal DVD-RW:48x
- AD-7630 Black:24x
CD rewrite speed
- AD-7173A optical disc drive Internal DVD-RW:32x
- AD-7630 Black:16x
DVD+R write speed
- AD-7173A optical disc drive Internal DVD-RW:18x
- AD-7630 Black:8x
DVD-R Double Layer write speed
- AD-7173A optical disc drive Internal DVD-RW:8x
- AD-7630 Black:4x
DVD-R write speed
- AD-7173A optical disc drive Internal DVD-RW:18x
- AD-7630 Black:8x
CD read speed
- AD-7173A optical disc drive Internal DVD-RW:48x
- AD-7630 Black:24x
DVD-RAM read speed
- AD-7173A optical disc drive Internal DVD-RW:12x
- AD-7630 Black:8x

Side by side

Differences highlightedShow differences only

Comparison of AD-7173A, AD-7630 Black
37 specifications	A NEC AD-7173A optical disc drive Internal DVD-RW Model AD-7173A View product	B NEC AD-7630 Black View product
Designidentical
Internal	Yes	Yes
Product colourKnown for one	Unknown — not stated by the source	Black
Disc loading typeKnown for one	Unknown — not stated by the source	Slot
MountingKnown for one	Vertical/Horizontal	Unknown — not stated by the source
Performance1 differ
Optical drive type	DVD-RW	DVD-RW
InterfaceDiffers	EIDE/ATA	IDE/ATA
Drive device, buffer size	2 MB	2 MB
Writing speed5 differ
CD write speedDiffers	48x	24x
CD rewrite speedDiffers	32x	16x
CD-R write speedKnown for one	Unknown — not stated by the source	24x
CD-RW write speedKnown for one	Unknown — not stated by the source	16x
DVD+R write speedDiffers	18x	8x
DVD+RW write speed	8x	8x
DVD-R Double Layer write speedDiffers	8x	4x
DVD-R write speedDiffers	18x	8x
DVD-RAM write speedKnown for one	Unknown — not stated by the source	5x
DVD-RW write speed	6x	6x
DVD write speedKnown for one	Unknown — not stated by the source	8x
Reading speed2 differ
CD read speedDiffers	48x	24x
CD-ROM read speedKnown for one	Unknown — not stated by the source	24x
DVD-R Double Layer read speedKnown for one	Unknown — not stated by the source	4x
DVD-RAM read speedDiffers	12x	8x
DVD read speedKnown for one	Unknown — not stated by the source	8x
Access time2 differ
DVD drive average random access timeDiffers	160 ms	190 ms
Access timeDiffers	140 ms	190 ms
CD-ROM drive average random access timeKnown for one	Unknown — not stated by the source	190 ms
Record modesidentical
Disc-at-once (DAO)Known for one	Unknown — not stated by the source	Yes
Fixed packetKnown for one	Unknown — not stated by the source	Yes
Multi sessionKnown for one	Unknown — not stated by the source	Yes
Session-at-once (SAO)Known for one	Unknown — not stated by the source	Yes
Track-at-once (TAO)Known for one	Unknown — not stated by the source	Yes
Variable packetKnown for one	Unknown — not stated by the source	Yes
Weight & dimensions1 differ
WeightDiffers	705 g	160 g
Other features3 differ
Media types supportedDiffers	DVD-ROM, DVD-R (DL), DVD-RW, DVD-RAM, DVD +R, DVD +RW, DVD +R9, CD-ROM, CD-R, CD-RW 80mm & 120mm di	DVD-ROM, DVD-R, DVD-RW, DVD-RAM, DVD +R, DVD +RW, DVD +R DL, DVD-R DL, DVD-RAM, DVD-Video, CD-ROM, CD-ROM XA, CD-Audio, CD-Extra, CD-Text, CD-I Ready, CD-Bridge, Photo-CD, Video-CD, Hybrid-CD
Write methodsDiffers	DAO, SAO, TAO zero gap, variable / fixed packet, multisession	DAO (disc at once), SAO (session at once), TAO (track at once) with zero gap, variable or fixed packet, multisession
Dimensions (WxDxH)Differs	148 x 42 x 175 mm	129 x 128 x 12.7 mm
Number of optical discs	1 discs	1 discs

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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