Product comparison · 2 optical disc drives

HP RM475E optical disc drive Black vs Lenovo 42T2599 optical disc drive Internal DVD±R/RW

5specifications compared
4differ
1identical
26known for one product only

Key differences

Internal
- RM475E optical disc drive Black:No
- 42T2599 optical disc drive Internal DVD±R/RW:Yes
Interface
- RM475E optical disc drive Black:USB
- 42T2599 optical disc drive Internal DVD±R/RW:Serial ATA
DVD drive average random access time
- RM475E optical disc drive Black:130 ms
- 42T2599 optical disc drive Internal DVD±R/RW:180 ms
CD-ROM drive average random access time
- RM475E optical disc drive Black:130 ms
- 42T2599 optical disc drive Internal DVD±R/RW:150 ms

Side by side

Differences highlightedShow differences only

Comparison of RM475E, 42T2599
31 specifications	A HP RM475E optical disc drive Black Model RM475E View product	B Lenovo 42T2599 optical disc drive Internal DVD±R/RW Model 42T2599 View product
Design1 differ
InternalDiffers	No	Yes
Product colourKnown for one	Black	Unknown — not stated by the source
Performance1 differ
InterfaceDiffers	USB	Serial ATA
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
Optical drive typeKnown for one	Unknown — not stated by the source	DVD±R/RW
Compatible productsKnown for one	Unknown — not stated by the source	ThinkPad T400, T400s, T410, T410i, T410s, T410si, T420s, T500
Reading speedidentical
CD read speed	24x	24x
DVD+R read speedKnown for one	8x	Unknown — not stated by the source
DVD read speedKnown for one	8x	Unknown — not stated by the source
DVD-ROM read speedKnown for one	Unknown — not stated by the source	8x
Access time2 differ
DVD drive average random access timeDiffers	130 ms	180 ms
CD-ROM drive average random access timeDiffers	130 ms	150 ms
Operational conditionsidentical
Operating relative humidity (H-H)Known for one	10 - 80%	Unknown — not stated by the source
Operating temperature (T-T)Known for one	5 - 35 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 65 °C	Unknown — not stated by the source
Other featuresidentical
Media types supportedKnown for one	DVD±R/±RW, DVD±R DL, DVD-RAM, DVD-ROM, CD-R/RW/ROM	Unknown — not stated by the source
Minimum RAMKnown for one	128 MB	Unknown — not stated by the source
Minimum processorKnown for one	1.3 GHz Pentium IV	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
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	129 x 131 x 9.5 mm
Writing speedidentical
CD write speedKnown for one	Unknown — not stated by the source	24x
CD rewrite speedKnown for one	Unknown — not stated by the source	16x
DVD+R Double Layer write speedKnown for one	Unknown — not stated by the source	4x
DVD+RW write speedKnown for one	Unknown — not stated by the source	6x
DVD-R Double Layer write speedKnown for one	Unknown — not stated by the source	4x
DVD-RAM write speedKnown for one	Unknown — not stated by the source	5x
DVD-RW write speedKnown for one	Unknown — not stated by the source	6x
Weight & dimensionsidentical
HeightKnown for one	Unknown — not stated by the source	9.5 mm
WeightKnown for one	Unknown — not stated by the source	140 g

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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