Product comparison · 2 internal hard drives

Lenovo 300GB 3.5" SAS vs Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive

8specifications compared
7differ
1identical
17known for one product only

Key differences

The Lenovo 300GB 3.5" SAS has 50 GB more HDD capacity than the Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive (300 GB vs 250 GB). The Lenovo 300GB 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 3.5 ms more average latency than the Lenovo 300GB 3.5" SAS (5.5 ms vs 2 ms). Interface: SAS on the Lenovo 300GB 3.5" SAS, Serial ATA on the Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive. Dimensions (WxDxH): 102 x 147 x 26 mm on the Lenovo 300GB 3.5" SAS, 69.85 x 100.2 x 9.5 mm on the Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive.

HDD capacity
- 300GB 3.5" SAS:300 GB
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:250 GB
HDD speed
- 300GB 3.5" SAS:15000 RPM
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:5400 RPM
Interface
- 300GB 3.5" SAS:SAS
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:Serial ATA
Average latency
- 300GB 3.5" SAS:2 ms
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:5.5 ms
Weight
- 300GB 3.5" SAS:840 g
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:102 g
Dimensions (WxDxH)
- 300GB 3.5" SAS:102 x 147 x 26 mm
- ThinkPad 250GB 5400rpm Serial ATA Hard drive:69.85 x 100.2 x 9.5 mm

Side by side

Differences highlightedShow differences only

Comparison of 300GB 3.5" SAS, ThinkPad 250GB 5400rpm Serial ATA Hard drive
25 specifications	A Lenovo 300GB 3.5" SAS View product	B Lenovo ThinkPad 250GB 5400rpm Serial ATA Hard drive View product
Features4 differ
HDD capacityDiffers	300 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 timeKnown for one	Unknown — not stated by the source	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
Average seek timeKnown for one	3.5 ms	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
Other features2 differ
Dimensions (WxDxH)Differs	102 x 147 x 26 mm	69.85 x 100.2 x 9.5 mm
Compatible operating systemsDiffers	Microsoft Windows Vista, Microsoft Windows XP	Microsoft Windows 2000 Windows XP Windows Vista
Data transfer rateKnown for one	Unknown — not stated by the source	1.5 Gbit/s
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
CertificationKnown for one	Unknown — not stated by the source	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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