LG GDR-H20NBRL optical disc drive Internal Black vs LG GDR-H30N optical disc drive Internal

Comparison of GDR-H20NBRL, GDR-H30N

20 specifications	A LG GDR-H20NBRL optical disc drive Internal Black Model GDR-H20NBRL View product	B LG GDR-H30N optical disc drive Internal Model GDR-H30N View product
Designidentical
Product colourKnown for one	Black	—Unknown — not stated by the source
Disc loading typeKnown for one	—Unknown — not stated by the source	Tray
Performance1 differ
InterfaceDiffers	Serial ATA	EIDE/ATA
Drive device, buffer sizeKnown for one	0.198 MB	—Unknown — not stated by the source
Reading speedidentical
DVD read speedKnown for one	16x	—Unknown — not stated by the source
DVD+R read speedKnown for one	—Unknown — not stated by the source	16x
DVD-R read speedKnown for one	—Unknown — not stated by the source	16x
Other features1 differ
Compatible operating systemsDiffers	Windows 95, 98, 2K, ME, NT 4.0 +, XP, Vista, 2003 server, Linux Slackware 3.10, Solaris 2.4 +	Windows 95, 98, 2K, ME, NT 4.0, XP, Vista, 2003 server, Linux Slackware Ver 3.10, Solaris Ver 2.4
Drive device, transfer rateKnown for one	22.1 MB/s	—Unknown — not stated by the source
Mac compatibilityKnown for one	No	—Unknown — not stated by the source
Number of optical discsKnown for one	1 discs	—Unknown — not stated by the source
Buffer sizeKnown for one	—Unknown — not stated by the source	198 KB
Writing speedidentical
CD write speedKnown for one	—Unknown — not stated by the source	48x
CD rewrite speedKnown for one	—Unknown — not stated by the source	32x

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.