Product comparison · 2 optical disc drives

ASUS DRW-20B1LT optical disc drive Internal Black vs ASUS DRW-20B1S optical disc drive Internal Black

24specifications compared
2differ
22identical
22known for one product only

Key differences

CD read speed
- DRW-20B1LT optical disc drive Internal Black:40x
- DRW-20B1S optical disc drive Internal Black:48x

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Differences highlightedShow differences only

Comparison of DRW-20B1LT, DRW-20B1S
46 specifications	A ASUS DRW-20B1LT optical disc drive Internal Black Model DRW-20B1LT View product	B ASUS DRW-20B1S optical disc drive Internal Black Model DRW-20B1S View product
Designidentical
Internal	Yes	Yes
Product colour	Black	Black
MountingKnown for one	Vertical/Horizontal	Unknown — not stated by the source
Performanceidentical
InterfaceKnown for one	Serial ATA	Unknown — not stated by the source
LightScribeKnown for one	Yes	Unknown — not stated by the source
Drive device, buffer size	2 MB	2 MB
Optical disc diameterKnown for one	120 mm	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	60000 h	Unknown — not stated by the source
Writing speedidentical
CD write speed	48x	48x
CD rewrite speed	32x	32x
DVD+R Double Layer write speed	12x	12x
DVD+R write speed	20x	20x
DVD+RW write speed	8x	8x
DVD-R Double Layer write speed	12x	12x
DVD-R write speed	20x	20x
DVD-RAM write speed	12x	12x
DVD-RW write speed	6x	6x
Reading speed1 differ
CD read speedDiffers	40x	48x
CD-RW read speed	40x	40x
DVD-R Double Layer read speed	12x	12x
DVD-ROM read speed	16x	16x
DVD+R Double Layer read speed	12x	12x
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
DVD-RAM read speedKnown for one	Unknown — not stated by the source	12x
DVD read speedKnown for one	Unknown — not stated by the source	16x
Access timeidentical
DVD drive average random access timeKnown for one	140 ms	Unknown — not stated by the source
CD-ROM drive average random access timeKnown for one	150 ms	Unknown — not stated by the source
Record modesidentical
Disc-at-once (DAO)	Yes	Yes
Multi sessionKnown for one	Yes	Unknown — not stated by the source
Packet writingKnown for one	Yes	Unknown — not stated by the source
Random write	Yes	Yes
Sequential writing	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
Operational conditionsidentical
Operating relative humidity (H-H)Known for one	20 - 85%	Unknown — not stated by the source
Operating temperature (T-T)Known for one	5 - 45 °C	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	10 - 90%	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-20 - 60 °C	Unknown — not stated by the source
Weight & dimensionsidentical
HeightKnown for one	41.3 mm	Unknown — not stated by the source
Weight	610 g	610 g
Other features1 differ
Power requirementsKnown for one	DC+5V ±5%,DC+12V ±10 %	Unknown — not stated by the source
Media types supportedKnown for one	DVD-ROM, DVD+/-RW, DVD+/-R, Photo CD, Video CD, CD-DA, CD-Extra, CD-Text, CD-R, CD-RW, DVD-RAM	Unknown — not stated by the source
Dimensions (WxDxH)Known for one	146 x 170 x 41.3 mm	Unknown — not stated by the source
Compatible operating systemsDiffers	Windows 2000, Windows 98, Windows NT, XP, Vista	Windows XP/ NT/2000/VISTA

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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