NEC AD-5170 Silver vs NEC AD-7173A optical disc drive Internal DVD-RW

Comparison of AD-5170 Silver, AD-7173A

32 specifications	A NEC AD-5170 SilverView product	B NEC AD-7173A optical disc drive Internal DVD-RW Model AD-7173A View product
Designidentical
Internal	Yes	Yes
Product colourKnown for one	Silver	—Unknown — not stated by the source
Disc loading typeKnown for one	Tray	—Unknown — not stated by the source
Mounting	Vertical/Horizontal	Vertical/Horizontal
Performanceidentical
Optical drive type	DVD-RW	DVD-RW
Interface	EIDE/ATA	EIDE/ATA
Drive device, buffer size	2 MB	2 MB
Writing speedidentical
CD write speed	48x	48x
CD rewrite speed	32x	32x
CD-R write speedKnown for one	48x	—Unknown — not stated by the source
CD-RW write speedKnown for one	32x	—Unknown — not stated by the source
DVD+R write speed	18x	18x
DVD+RW write speed	8x	8x
DVD-R Double Layer write speed	8x	8x
DVD-R write speed	18x	18x
DVD-RW write speed	6x	6x
Reading speedidentical
CD read speed	48x	48x
DVD-RAM read speedKnown for one	—Unknown — not stated by the source	12x
Access timeidentical
DVD drive average random access time	160 ms	160 ms
CD-ROM drive average random access timeKnown for one	140 ms	—Unknown — not stated by the source
Access timeKnown for one	—Unknown — not stated by the source	140 ms
Record modesidentical
Disc-at-once (DAO)Known for one	Yes	—Unknown — not stated by the source
Fixed packetKnown for one	Yes	—Unknown — not stated by the source
Multi sessionKnown for one	Yes	—Unknown — not stated by the source
Session-at-once (SAO)Known for one	Yes	—Unknown — not stated by the source
Track-at-once (TAO)Known for one	Yes	—Unknown — not stated by the source
Variable packetKnown for one	Yes	—Unknown — not stated by the source
Weight & dimensionsidentical
Weight	705 g	705 g
Other features2 differ
Media types supportedDiffers	DVD-ROM, DVD-R (DL ), DVD-RW, DVD+R, DVD+RW,DVD+R9,CD-ROM, CD-R, CD-RW 80mm/120mm	DVD-ROM, DVD-R (DL), DVD-RW, DVD-RAM, DVD +R, DVD +RW, DVD +R9, CD-ROM, CD-R, CD-RW 80mm & 120mm di
Write methods	DAO, SAO, TAO zero gap, variable / fixed packet, multisession	DAO, SAO, TAO zero gap, variable / fixed packet, multisession
Dimensions (WxDxH)Differs	148 x 175 x 42 mm	148 x 42 x 175 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.