Product comparison · 2 internal hard drives

Samsung Spinpoint T HD251KJ internal hard drive vs Seagate EE25.2 Series™ 2.5-inch HD 40GB SATA

14specifications compared
11differ
3identical
9known for one product only

Key differences

The Samsung Spinpoint T HD251KJ internal hard drive has 210 GB more HDD capacity than the Seagate EE25.2 Series™ 2.5-inch HD 40GB SATA (250 GB vs 40 GB). The Samsung Spinpoint T HD251KJ internal hard drive has 1,800 RPM more HDD speed than the Seagate EE25.2 Series™ 2.5-inch HD 40GB SATA (7200 RPM vs 5400 RPM). The Samsung Spinpoint T HD251KJ internal hard drive has 1" more HDD size than the Seagate EE25.2 Series™ 2.5-inch HD 40GB SATA (3.5" vs 2.5"). Interface: Serial ATA II on the Samsung Spinpoint T HD251KJ internal hard drive, Serial ATA on the Seagate EE25.2 Series™ 2.5-inch HD 40GB SATA. Operating voltage: 5 / 12 V on the Samsung Spinpoint T HD251KJ internal hard drive, 5 V on the Seagate EE25.2 Series™ 2.5-inch HD 40GB SATA.

HDD capacity
- Spinpoint T HD251KJ internal hard drive:250 GB
- EE25.2 Series™ 2.5-inch HD 40GB SATA:40 GB
HDD speed
- Spinpoint T HD251KJ internal hard drive:7200 RPM
- EE25.2 Series™ 2.5-inch HD 40GB SATA:5400 RPM
HDD size
- Spinpoint T HD251KJ internal hard drive:3.5"
- EE25.2 Series™ 2.5-inch HD 40GB SATA:2.5"
Interface
- Spinpoint T HD251KJ internal hard drive:Serial ATA II
- EE25.2 Series™ 2.5-inch HD 40GB SATA:Serial ATA
Average seek time
- Spinpoint T HD251KJ internal hard drive:8.9 ms
- EE25.2 Series™ 2.5-inch HD 40GB SATA:11 ms
Operating voltage
- Spinpoint T HD251KJ internal hard drive:5 / 12 V
- EE25.2 Series™ 2.5-inch HD 40GB SATA:5 V
Operating temperature (T-T)
- Spinpoint T HD251KJ internal hard drive:0 - 60 °C
- EE25.2 Series™ 2.5-inch HD 40GB SATA:20 - 75 °C
Width
- Spinpoint T HD251KJ internal hard drive:102 mm
- EE25.2 Series™ 2.5-inch HD 40GB SATA:69.8 mm

Side by side

Differences highlightedShow differences only

Comparison of HD251KJ, EE25.2 Series™ 2.5-inch HD 40GB SATA
23 specifications	A Samsung Spinpoint T HD251KJ internal hard drive Model HD251KJ View product	B Seagate EE25.2 Series™ 2.5-inch HD 40GB SATA View product
Features5 differ
HDD capacityDiffers	250 GB	40 GB
HDD speedDiffers	7200 RPM	5400 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA II	Serial ATA
Storage drive buffer size	8 MB	8 MB
Track to track seek timeKnown for one	0.8 ms	Unknown — not stated by the source
Average seek timeDiffers	8.9 ms	11 ms
Start/stop cyclesKnown for one	50000	Unknown — not stated by the source
Average latencyKnown for one	Unknown — not stated by the source	5.5 ms
Power1 differ
Operating voltageDiffers	5 / 12 V	5 V
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 60 °C	20 - 75 °C
Operating relative humidity (H-H)	5 - 90%	5 - 90%
Storage temperature (T-T)Known for one	Unknown — not stated by the source	40 - 85 °C
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Non-operating altitudeKnown for one	Unknown — not stated by the source	15000
Weight & dimensions4 differ
WidthDiffers	102 mm	69.8 mm
DepthDiffers	146 mm	100.2 mm
HeightDiffers	25 mm	9.5 mm
WeightDiffers	610 g	102 g
Other featuresidentical
Dimensions (WxDxH)Known for one	102 x 146 x 25 mm	Unknown — not stated by the source
Product colourKnown for one	Black	Unknown — not stated by the source
Internal	Yes	Yes
Maximum data transfer rateKnown for one	300 Mbit/s	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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