Product comparison · 2 optical disc drives

LG 20x External Super Multi Security DVD Rewriter vs LG GDRH30N optical disc drive Internal

8specifications compared
7differ
1identical
19known for one product only

Key differences

Internal
- 20x External Super Multi Security DVD Rewriter:No
- GDRH30N optical disc drive Internal:Yes
CD write speed
- 20x External Super Multi Security DVD Rewriter:20x
- GDRH30N optical disc drive Internal:52x
CD rewrite speed
- 20x External Super Multi Security DVD Rewriter:20x
- GDRH30N optical disc drive Internal:32x
CD read speed
- 20x External Super Multi Security DVD Rewriter:48x
- GDRH30N optical disc drive Internal:52x
CD-ROM read speed
- 20x External Super Multi Security DVD Rewriter:48x
- GDRH30N optical disc drive Internal:52x
Weight
- 20x External Super Multi Security DVD Rewriter:1.5 kg
- GDRH30N optical disc drive Internal:700 g
Dimensions (WxDxH)
- 20x External Super Multi Security DVD Rewriter:160 x 230 x 50 mm
- GDRH30N optical disc drive Internal:146 x 165 x 41.3 mm

Side by side

Differences highlightedShow differences only

Comparison of 20x External Super Multi Security DVD Rewriter, GDRH30N
27 specifications	A LG 20x External Super Multi Security DVD Rewriter View product	B LG GDRH30N optical disc drive Internal Model GDRH30N View product
Design1 differ
InternalDiffers	No	Yes
Disc loading type	Tray	Tray
MountingKnown for one	Horizontal	Unknown — not stated by the source
Performanceidentical
Drive device, buffer sizeKnown for one	2 MB	Unknown — not stated by the source
InterfaceKnown for one	Unknown — not stated by the source	EIDE/ATA
Writing speed2 differ
CD write speedDiffers	20x	52x
CD rewrite speedDiffers	20x	32x
Reading speed2 differ
CD read speedDiffers	48x	52x
CD-R read speedKnown for one	48x	Unknown — not stated by the source
CD-ROM read speedDiffers	48x	52x
CD-RW read speedKnown for one	40x	Unknown — not stated by the source
DVD-R read speedKnown for one	16x	Unknown — not stated by the source
DVD-RW read speedKnown for one	12x	Unknown — not stated by the source
DVD-ROM read speedKnown for one	Unknown — not stated by the source	16x
Record modesidentical
Disc-at-once (DAO)Known for one	Yes	Unknown — not stated by the source
Packet writingKnown for one	Yes	Unknown — not stated by the source
Random writeKnown for one	Yes	Unknown — not stated by the source
Sequential writingKnown 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
Weight & dimensions1 differ
HeightKnown for one	50 mm	Unknown — not stated by the source
WeightDiffers	1.5 kg	700 g
Other features1 differ
Dimensions (WxDxH)Differs	160 x 230 x 50 mm	146 x 165 x 41.3 mm
Buffer sizeKnown for one	Unknown — not stated by the source	198 KB
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows 95, 98, 2K, ME, NT 4.0, XP, Vista, 2003 server, Linux Slackware Ver 3.10, Solaris Ver 2.4
Access timeidentical
DVD drive average random access timeKnown for one	Unknown — not stated by the source	140 ms
CD-ROM drive average random access timeKnown for one	Unknown — not stated by the source	160 ms

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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