Product comparison · 2 internal hard drives

Seagate Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100 vs Seagate U-series ST320014A-RFB internal hard drive

16specifications compared
14differ
2identical
34known for one product only

Key differences

HDD capacity
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:100 GB
- U-series ST320014A-RFB internal hard drive:20 GB
HDD size
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:2.5"
- U-series ST320014A-RFB internal hard drive:3.5"
Storage drive buffer size
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:8 MB
- U-series ST320014A-RFB internal hard drive:2 MB
HDD number of heads
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:256
- U-series ST320014A-RFB internal hard drive:1
Read seek time
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:22 ms
- U-series ST320014A-RFB internal hard drive:18 ms
Write seek time
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:24 ms
- U-series ST320014A-RFB internal hard drive:24.9 ms
Average seek time
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:11 ms
- U-series ST320014A-RFB internal hard drive:12.7 ms
Power consumption (standby)
- Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100:0.2 W
- U-series ST320014A-RFB internal hard drive:1.2 W

Side by side

Differences highlightedShow differences only

Comparison of 100GB, ST320014A-RFB
50 specifications	A Seagate Momentus 100GB internal hard drive 5400 RPM 8 MB 2.5" Ultra-ATA/100 Model 100GB View product	B Seagate U-series ST320014A-RFB internal hard drive Model ST320014A-RFB View product
Features7 differ
HDD capacityDiffers	100 GB	20 GB
HDD sizeDiffers	2.5"	3.5"
TypeKnown for one	Unknown — not stated by the source	HDD
Storage drive buffer sizeDiffers	8 MB	2 MB
HDD number of headsDiffers	256	1
Read seek timeDiffers	22 ms	18 ms
Write seek timeDiffers	24 ms	24.9 ms
Full stroke seek timeKnown for one	Unknown — not stated by the source	42 ms
Track to track seek timeKnown for one	Unknown — not stated by the source	1.2 ms
Average seek timeDiffers	11 ms	12.7 ms
SMART technologyKnown for one	Unknown — not stated by the source	Yes
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Start/stop cyclesKnown for one	Unknown — not stated by the source	50000
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	600000 h
Component forKnown for one	Laptop	Unknown — not stated by the source
HDD number of cylindersKnown for one	1024	Unknown — not stated by the source
Average latencyKnown for one	5.6 ms	Unknown — not stated by the source
Power2 differ
Power consumption (typical)Known for one	Unknown — not stated by the source	6 W
Power consumption (standby)Differs	0.2 W	1.2 W
Power consumption (idle)Known for one	Unknown — not stated by the source	4.5 W
Power consumption (read)Known for one	Unknown — not stated by the source	5.5 W
Power consumption (write)Known for one	Unknown — not stated by the source	5.5 W
Operating voltageDiffers	5 V	5 / 12 V
Start-up currentKnown for one	1 A	Unknown — not stated by the source
Operational conditions1 differ
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
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 90%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	5 G
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-121.92 - 12192 m
Operating shockDiffers	350 G	63 G
Non-operating shockKnown for one	Unknown — not stated by the source	350 G
Weight & dimensions4 differ
WidthDiffers	69.8 mm	101.9 mm
DepthDiffers	100.2 mm	147 mm
HeightDiffers	9.5 mm	20 mm
WeightDiffers	102 g	455 g
Logistics dataidentical
Harmonized System (HS) codeKnown for one	Unknown — not stated by the source	84717050
Other featuresidentical
Drive ready timeKnown for one	Unknown — not stated by the source	7 s
Dimensions (WxDxH)Known for one	69.85 x 100.2 x 9.5 mm	Unknown — not stated by the source
Drive device, transfer rateKnown for one	100 MB/s	Unknown — not stated by the source
External power adapterKnown for one	No	Unknown — not stated by the source
InternalKnown for one	Yes	Unknown — not stated by the source
Mac compatibilityKnown for one	No	Unknown — not stated by the source
Maximum data transfer rateKnown for one	352 Mbit/s	Unknown — not stated by the source
Plug and PlayKnown for one	Yes	Unknown — not stated by the source
USB poweredKnown for one	No	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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