Product comparison · 2 internal hard drives

Samsung 640GB HDD vs Seagate Cheetah 15K.5 73GB Fibre Channel 20pk

15specifications compared
11differ
4identical
19known for one product only

Key differences

The Samsung 640GB HDD has 566.6 GB more HDD capacity than the Seagate Cheetah 15K.5 73GB Fibre Channel 20pk (640 GB vs 73.4 GB). The Seagate Cheetah 15K.5 73GB Fibre Channel 20pk has 7,800 RPM more HDD speed than the Samsung 640GB HDD (15000 RPM vs 7200 RPM). The Samsung 640GB HDD has 2.17 ms more average latency than the Seagate Cheetah 15K.5 73GB Fibre Channel 20pk (4.17 ms vs 2 ms). Operating temperature (T-T): 0 - 60 °C on the Samsung 640GB HDD, 5 - 55 °C on the Seagate Cheetah 15K.5 73GB Fibre Channel 20pk.

HDD capacity
- 640GB HDD:640 GB
- Cheetah 15K.5 73GB Fibre Channel 20pk:73.4 GB
HDD speed
- 640GB HDD:7200 RPM
- Cheetah 15K.5 73GB Fibre Channel 20pk:15000 RPM
Average latency
- 640GB HDD:4.17 ms
- Cheetah 15K.5 73GB Fibre Channel 20pk:2 ms
Power consumption (typical)
- 640GB HDD:8.56 W
- Cheetah 15K.5 73GB Fibre Channel 20pk:14.7 W
Operating temperature (T-T)
- 640GB HDD:0 - 60 °C
- Cheetah 15K.5 73GB Fibre Channel 20pk:5 - 55 °C
Operating shock
- 640GB HDD:70 G
- Cheetah 15K.5 73GB Fibre Channel 20pk:60 G
Non-operating shock
- 640GB HDD:300 G
- Cheetah 15K.5 73GB Fibre Channel 20pk:250 G
Width
- 640GB HDD:101.5 mm
- Cheetah 15K.5 73GB Fibre Channel 20pk:101.6 mm

Side by side

Differences highlightedShow differences only

Comparison of 640GB HDD, Cheetah 15K.5 73GB Fibre Channel 20pk
34 specifications	A Samsung 640GB HDD View product	B Seagate Cheetah 15K.5 73GB Fibre Channel 20pk View product
Features3 differ
HDD capacityDiffers	640 GB	73.4 GB
HDD speedDiffers	7200 RPM	15000 RPM
HDD size	3.5"	3.5"
InterfaceKnown for one	Serial ATA II	Unknown — not stated by the source
TypeKnown for one	HDD	Unknown — not stated by the source
Storage drive buffer size	16 MB	16 MB
Average seek timeKnown for one	8.9 ms	Unknown — not stated by the source
Average latencyDiffers	4.17 ms	2 ms
Bytes per sectorKnown for one	512	Unknown — not stated by the source
Start/stop cyclesKnown for one	50000	Unknown — not stated by the source
HDD number of headsKnown for one	Unknown — not stated by the source	2
Read seek timeKnown for one	Unknown — not stated by the source	3.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	4 ms
Power1 differ
Power consumption (typical)Differs	8.56 W	14.7 W
Power consumption (standby)Known for one	1.18 W	Unknown — not stated by the source
Power consumption (PowerSave)Known for one	1.18 W	Unknown — not stated by the source
Operating voltage	5 / 12 V	5 / 12 V
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 60 °C	5 - 55 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)Known for one	5 - 90%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating altitudeKnown for one	-300 - 3000 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-300 - 12000 m	Unknown — not stated by the source
Operating shockDiffers	70 G	60 G
Non-operating shockDiffers	300 G	250 G
Weight & dimensions4 differ
WidthDiffers	101.5 mm	101.6 mm
DepthDiffers	147 mm	46 mm
HeightDiffers	26.1 mm	25.4 mm
WeightDiffers	610 g	771 g
Other featuresidentical
Drive ready timeKnown for one	12 s	Unknown — not stated by the source
Drive device, transfer rateKnown for one	Unknown — not stated by the source	400 MB/s
InternalKnown for one	Unknown — not stated by the source	Yes
Compatible productsKnown for one	Unknown — not stated by the source	PCs
Acoustic pressure emissionsKnown for one	Unknown — not stated by the source	30 dB

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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