Product comparison · 2 internal hard drives

Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk vs Seagate Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk

10specifications compared
8differ
2identical
12known for one product only

Key differences

The Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk has 200 GB more HDD capacity than the Seagate Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk (400 GB vs 200 GB). The Seagate Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk has 1.19 ms more average latency than the Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk (4.17 ms vs 2.98 ms). The Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk has 32 mm more width than the Seagate Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk (101.8 mm vs 69.8 mm). Interface: SAS on the Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk, Serial ATA on the Seagate Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk.

HDD capacity
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:400 GB
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:200 GB
Interface
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:SAS
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:Serial ATA
Average latency
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:2.98 ms
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:4.17 ms
Width
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:101.8 mm
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:69.8 mm
Depth
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:147 mm
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:100.5 mm
Height
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:26.1 mm
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:9.5 mm
Weight
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:771 g
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:115 g
Sustained data rate
- Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk:97 MB/s
- Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk:69.5 MB/s

Side by side

Differences highlightedShow differences only

Comparison of Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk, Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk
22 specifications	A Seagate Cheetah NS 400GB 3-Gb/s Serial Attached SCSI 20pk View product	B Seagate Momentus 7200.2 SATA 3.0Gb/s G-Force 200-GB Laptop HD 25pk View product
Features3 differ
HDD capacityDiffers	400 GB	200 GB
HDD speedKnown for one	Unknown — not stated by the source	7200 RPM
HDD sizeKnown for one	Unknown — not stated by the source	2.5"
InterfaceDiffers	SAS	Serial ATA
Component forKnown for one	Unknown — not stated by the source	Laptop
Storage drive buffer size	16 MB	16 MB
Average seek timeKnown for one	Unknown — not stated by the source	11 ms
Average latencyDiffers	2.98 ms	4.17 ms
Read seek timeKnown for one	3.9 ms	Unknown — not stated by the source
Write seek timeKnown for one	4.2 ms	Unknown — not stated by the source
Track to track seek timeKnown for one	0.35 ms	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	Unknown — not stated by the source	5 V
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 60 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Weight & dimensions4 differ
WidthDiffers	101.8 mm	69.8 mm
DepthDiffers	147 mm	100.5 mm
HeightDiffers	26.1 mm	9.5 mm
WeightDiffers	771 g	115 g
Other features1 differ
Drive device, transfer rateKnown for one	Unknown — not stated by the source	300 MB/s
Internal	Yes	Yes
Sustained data rateDiffers	97 MB/s	69.5 MB/s
Data transfer rateKnown for one	3 Gbit/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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