Product comparison · 2 optical disc drives

NEC AD-7170A DVD-RW 18x vs NEC AD-7170S black

20specifications compared
2differ
18identical
8known for one product only

Key differences

Interface
- AD-7170A DVD-RW 18x:EIDE/ATA
- AD-7170S black:Serial ATA
Dimensions (WxDxH)
- AD-7170A DVD-RW 18x:148 x 175 x 42 mm
- AD-7170S black:148 x 42 x 175 mm

Side by side

Differences highlightedShow differences only

Comparison of AD-7170A DVD-RW 18x, AD-7170S black
28 specifications	A NEC AD-7170A DVD-RW 18x View product	B NEC AD-7170S black View product
Designidentical
Internal	Yes	Yes
Product colour	Black	Black
Disc loading typeKnown for one	Tray	Unknown — not stated by the source
Performance1 differ
InterfaceDiffers	EIDE/ATA	Serial ATA
Writing speedidentical
CD write speed	48x	48x
CD rewrite speed	32x	32x
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-RAM write speed	12x	12x
DVD-RW write speed	6x	6x
Reading speedidentical
CD read speed	48x	48x
DVD read speed	16x	16x
Access timeidentical
DVD drive average random access time	160 ms	160 ms
Access timeKnown for one	140 ms	Unknown — not stated by the source
CD-ROM drive average random access timeKnown for one	Unknown — not stated by the source	140 ms
Record modesidentical
Disc-at-once (DAO)	Yes	Yes
Fixed packetKnown for one	Yes	Unknown — not stated by the source
Multi session	Yes	Yes
Session-at-once (SAO)	Yes	Yes
Track-at-once (TAO)	Yes	Yes
Variable packetKnown for one	Yes	Unknown — not stated by the source
Weight & dimensionsidentical
Weight	705 g	705 g
Other features1 differ
Media types supportedKnown for one	DVD-ROM, DVD-Video, CD-ROM, CD-ROM XA, CD-I Ready, CD-Bridge, PhotoCD, VideoCD, CD-DA, CD Extra, CD Text	Unknown — not stated by the source
Dimensions (WxDxH)Differs	148 x 175 x 42 mm	148 x 42 x 175 mm
Drive devices burst data transfer rate (PIO)Known for one	mode 4	Unknown — not stated by the source
Drive devices burst data transfer rate (Ultra DMA)Known for one	Ultra DMA 66	Unknown — not stated by the source

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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