Product comparison · 2 internal hard drives

Lenovo 146GB 3.5" SAS vs Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive

7specifications compared
7differ
0identical
20known for one product only

Key differences

The Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive has 104 GB more HDD capacity than the Lenovo 146GB 3.5" SAS (250 GB vs 146 GB). The Lenovo 146GB 3.5" SAS has 9,600 RPM more HDD speed than the Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive (15000 RPM vs 5400 RPM). The Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive has 7.5 ms more read seek time than the Lenovo 146GB 3.5" SAS (11 ms vs 3.5 ms). Interface: SAS on the Lenovo 146GB 3.5" SAS, Serial ATA on the Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive.

HDD capacity
- 146GB 3.5" SAS:146 GB
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:250 GB
HDD speed
- 146GB 3.5" SAS:15000 RPM
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:5400 RPM
Interface
- 146GB 3.5" SAS:SAS
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:Serial ATA
Read seek time
- 146GB 3.5" SAS:3.5 ms
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:11 ms
Average latency
- 146GB 3.5" SAS:2 ms
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:5.5 ms
Weight
- 146GB 3.5" SAS:840 g
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:102 g

Side by side

Differences highlightedShow differences only

Comparison of 146GB 3.5" SAS, ThinkPad 250GB 5400rpm Serial ATA Hard drive
27 specifications	A Lenovo 146GB 3.5" SAS View product	B Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive View product
Features5 differ
HDD capacityDiffers	146 GB	250 GB
HDD speedDiffers	15000 RPM	5400 RPM
InterfaceDiffers	SAS	Serial ATA
HDD number of headsKnown for one	Unknown — not stated by the source	4
Read seek timeDiffers	3.5 ms	11 ms
Write seek timeKnown for one	Unknown — not stated by the source	13 ms
Average latencyDiffers	2 ms	5.5 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
TypeKnown for one	HDD	Unknown — not stated by the source
Component forKnown for one	Server/workstation	Unknown — not stated by the source
Storage drive buffer sizeKnown for one	16 MB	Unknown — not stated by the source
Operational conditionsidentical
Operating shockKnown for one	Unknown — not stated by the source	1000 G
Non-operating shockKnown for one	Unknown — not stated by the source	350 G
Weight & dimensions1 differ
WeightDiffers	840 g	102 g
WidthKnown for one	102 mm	Unknown — not stated by the source
DepthKnown for one	26 mm	Unknown — not stated by the source
HeightKnown for one	147 mm	Unknown — not stated by the source
Other features1 differ
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	69.85 x 100.2 x 9.5 mm
Compatible operating systemsKnown for one	Unknown — not stated by the source	Microsoft Windows 2000 Windows XP Windows Vista
Data transfer rateKnown for one	Unknown — not stated by the source	1.5 Gbit/s
InternalKnown for one	Unknown — not stated by the source	Yes
Mac compatibilityKnown for one	Unknown — not stated by the source	No
Maximum data transfer rateKnown for one	Unknown — not stated by the source	665 Mbit/s
CertificationDiffers	UL, TUV, IEC, CSA, CE MARK, C-Tick, BSMI	CE, UL, MIC, TUV, BSMI, C-Tick, CUL, RoHS
Windows operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	5 / 12 V	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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