Product comparison · 2 optical disc drives

NEC AD-7170A DVD-RW 18x vs Samsung DVD-Writer 20x Super-WriteMaster, Black, 10-pk

16specifications compared
9differ
7identical
28known for one product only

Key differences

Interface
- AD-7170A DVD-RW 18x:EIDE/ATA
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:Serial ATA
DVD+R write speed
- AD-7170A DVD-RW 18x:18x
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:20x
DVD-R Double Layer write speed
- AD-7170A DVD-RW 18x:8x
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:12x
DVD-R write speed
- AD-7170A DVD-RW 18x:18x
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:20x
CD read speed
- AD-7170A DVD-RW 18x:48x
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:40x
DVD drive average random access time
- AD-7170A DVD-RW 18x:160 ms
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:130 ms
Weight
- AD-7170A DVD-RW 18x:705 g
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:750 g
Dimensions (WxDxH)
- AD-7170A DVD-RW 18x:148 x 175 x 42 mm
- DVD-Writer 20x Super-WriteMaster, Black, 10-pk:148.2 x 170 x 42 mm

Side by side

Differences highlightedShow differences only

Comparison of AD-7170A DVD-RW 18x, DVD-Writer 20x Super-WriteMaster, Black, 10-pk
44 specifications	A NEC AD-7170A DVD-RW 18x View product	B Samsung DVD-Writer 20x Super-WriteMaster, Black, 10-pk View product
Designidentical
Disc loading typeKnown for one	Tray	Unknown — not stated by the source
Performance1 differ
InterfaceDiffers	EIDE/ATA	Serial ATA
Drive device, buffer sizeKnown for one	Unknown — not stated by the source	2 MB
Writing speed3 differ
CD-R write speedKnown for one	Unknown — not stated by the source	48x
CD-RW write speedKnown for one	Unknown — not stated by the source	32x
DVD+R Double Layer write speedKnown for one	Unknown — not stated by the source	16x
DVD+R write speedDiffers	18x	20x
DVD-R Double Layer write speedDiffers	8x	12x
DVD-R write speedDiffers	18x	20x
Reading speed1 differ
CD read speedDiffers	48x	40x
CD-R read speedKnown for one	Unknown — not stated by the source	40x
CD-ROM read speedKnown for one	Unknown — not stated by the source	48x
CD-RW read speedKnown for one	Unknown — not stated by the source	40x
DVD+R read speedKnown for one	Unknown — not stated by the source	16x
DVD-R Double Layer read speedKnown for one	Unknown — not stated by the source	12x
DVD-R read speedKnown for one	Unknown — not stated by the source	16x
DVD-RAM read speedKnown for one	Unknown — not stated by the source	12x
DVD-ROM read speedKnown for one	Unknown — not stated by the source	16x
DVD-RW read speedKnown for one	Unknown — not stated by the source	12x
DVD+R Double Layer read speedKnown for one	Unknown — not stated by the source	12x
DVD+RW read speedKnown for one	Unknown — not stated by the source	12x
DVD read speedKnown for one	16x	Unknown — not stated by the source
Access time1 differ
DVD drive average random access timeDiffers	160 ms	130 ms
CD-ROM drive average random access timeKnown for one	Unknown — not stated by the source	110 ms
Access timeKnown for one	140 ms	Unknown — not stated by the source
Weight & dimensions1 differ
WeightDiffers	705 g	750 g
Other features2 differ
Media types supportedDiffers	DVD-ROM, DVD-Video, CD-ROM, CD-ROM XA, CD-I Ready, CD-Bridge, PhotoCD, VideoCD, CD-DA, CD Extra, CD Text	DVD-RAM, DVD+R, DVD+R DL, DVD+RW, DVD-R, DVD-R DL, DVD-RW, DVD-Video, DVD-ROM, CD-R, CD-RW, CD-ROM, CD-ROM/XA, CD-Audio, Video-CD, Photo CD, CD-I(FMV), CD-Extra, CD-TEXT
Dimensions (WxDxH)Differs	148 x 175 x 42 mm	148.2 x 170 x 42 mm
Number of optical discsKnown for one	Unknown — not stated by the source	1 discs
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
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

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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