Product comparison · 2 internal hard drives

Seagate EE25 Series ST940813SM internal hard drive vs Seagate SV35 Series 500 GB Ultra ATA 100 20pk

14specifications compared
13differ
1identical
17known for one product only

Key differences

The Seagate SV35 Series 500 GB Ultra ATA 100 20pk has 460 GB more HDD capacity than the Seagate EE25 Series ST940813SM internal hard drive (500 GB vs 40 GB). The Seagate SV35 Series 500 GB Ultra ATA 100 20pk has 1,800 RPM more HDD speed than the Seagate EE25 Series ST940813SM internal hard drive (7200 RPM vs 5400 RPM). The Seagate SV35 Series 500 GB Ultra ATA 100 20pk has 1" more HDD size than the Seagate EE25 Series ST940813SM internal hard drive (3.5" vs 2.5"). Interface: Serial ATA on the Seagate EE25 Series ST940813SM internal hard drive, Serial ATA II on the Seagate SV35 Series 500 GB Ultra ATA 100 20pk. Operating voltage: 5 V on the Seagate EE25 Series ST940813SM internal hard drive, 5 / 12 V on the Seagate SV35 Series 500 GB Ultra ATA 100 20pk.

HDD capacity
- EE25 Series ST940813SM internal hard drive:40 GB
- SV35 Series 500 GB Ultra ATA 100 20pk:500 GB
HDD speed
- EE25 Series ST940813SM internal hard drive:5400 RPM
- SV35 Series 500 GB Ultra ATA 100 20pk:7200 RPM
HDD size
- EE25 Series ST940813SM internal hard drive:2.5"
- SV35 Series 500 GB Ultra ATA 100 20pk:3.5"
Interface
- EE25 Series ST940813SM internal hard drive:Serial ATA
- SV35 Series 500 GB Ultra ATA 100 20pk:Serial ATA II
Storage drive buffer size
- EE25 Series ST940813SM internal hard drive:8 MB
- SV35 Series 500 GB Ultra ATA 100 20pk:16 MB
Read seek time
- EE25 Series ST940813SM internal hard drive:12.5 ms
- SV35 Series 500 GB Ultra ATA 100 20pk:17 ms
Write seek time
- EE25 Series ST940813SM internal hard drive:14.5 ms
- SV35 Series 500 GB Ultra ATA 100 20pk:14 ms
Operating voltage
- EE25 Series ST940813SM internal hard drive:5 V
- SV35 Series 500 GB Ultra ATA 100 20pk:5 / 12 V

Side by side

Differences highlightedShow differences only

Comparison of ST940813SM, SV35 Series 500 GB Ultra ATA 100 20pk
31 specifications	A Seagate EE25 Series ST940813SM internal hard drive Model ST940813SM View product	B Seagate SV35 Series 500 GB Ultra ATA 100 20pk View product
Features7 differ
HDD capacityDiffers	40 GB	500 GB
HDD speedDiffers	5400 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	Serial ATA	Serial ATA II
Storage drive buffer sizeDiffers	8 MB	16 MB
Read seek timeDiffers	12.5 ms	17 ms
Write seek timeDiffers	14.5 ms	14 ms
Average latencyKnown for one	5.6 ms	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	550000 h	Unknown — not stated by the source
Component forKnown for one	Unknown — not stated by the source	Surveillance system
Track to track seek timeKnown for one	Unknown — not stated by the source	0.8 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Start/stop cyclesKnown for one	Unknown — not stated by the source	50000
Power1 differ
Power consumption (standby)Known for one	0.26 W	Unknown — not stated by the source
Operating voltageDiffers	5 V	5 / 12 V
Operational conditions4 differ
Operating temperature (T-T)Differs	-30 - 85 °C	0 - 60 °C
Storage temperature (T-T)Differs	-40 - 95 °C	-40 - 70 °C
Operating relative humidity (H-H)Known for one	5 - 95%	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	-304.8 - 4419 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-304.8 - 12192 m	Unknown — not stated by the source
Operating shockDiffers	200 G	63 G
Non-operating shockDiffers	800 G	350 G
Weight & dimensions1 differ
WeightDiffers	100 g	690 g
WidthKnown for one	Unknown — not stated by the source	101.6 mm
DepthKnown for one	Unknown — not stated by the source	147 mm
HeightKnown for one	Unknown — not stated by the source	26.1 mm
Other featuresidentical
Dimensions (WxDxH)Known for one	69.85 x 100.2 x 9.5 mm	Unknown — not stated by the source
Acoustic pressure emissionsKnown for one	2.3 dB	Unknown — not stated by the source
Drive device, transfer rateKnown for one	Unknown — not stated by the source	100 MB/s

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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