Product comparison · 2 internal hard drives

Seagate Savvio ST9300453SS-20PK internal hard drive vs Seagate Constellation ST9500621SS-20PK internal hard drive

23specifications compared
12differ
11identical
5known for one product only

Key differences

The Seagate Constellation ST9500621SS-20PK internal hard drive has 200 GB more HDD capacity than the Seagate Savvio ST9300453SS-20PK internal hard drive (500 GB vs 300 GB). The Seagate Savvio ST9300453SS-20PK internal hard drive has 7,800 RPM more HDD speed than the Seagate Constellation ST9500621SS-20PK internal hard drive (15000 RPM vs 7200 RPM). The Seagate Constellation ST9500621SS-20PK internal hard drive has 5.9 ms more read seek time than the Seagate Savvio ST9300453SS-20PK internal hard drive (8.5 ms vs 2.6 ms). Operating temperature (T-T): 5 - 55 °C on the Seagate Savvio ST9300453SS-20PK internal hard drive, 5 - 60 °C on the Seagate Constellation ST9500621SS-20PK internal hard drive.

HDD capacity
- Savvio ST9300453SS-20PK internal hard drive:300 GB
- Constellation ST9500621SS-20PK internal hard drive:500 GB
HDD speed
- Savvio ST9300453SS-20PK internal hard drive:15000 RPM
- Constellation ST9500621SS-20PK internal hard drive:7200 RPM
Read seek time
- Savvio ST9300453SS-20PK internal hard drive:2.6 ms
- Constellation ST9500621SS-20PK internal hard drive:8.5 ms
Write seek time
- Savvio ST9300453SS-20PK internal hard drive:3.1 ms
- Constellation ST9500621SS-20PK internal hard drive:9.5 ms
Average latency
- Savvio ST9300453SS-20PK internal hard drive:2 ms
- Constellation ST9500621SS-20PK internal hard drive:4.16 ms
Power consumption (typical)
- Savvio ST9300453SS-20PK internal hard drive:7.92 W
- Constellation ST9500621SS-20PK internal hard drive:5.6 W
Power consumption (idle)
- Savvio ST9300453SS-20PK internal hard drive:4.23 W
- Constellation ST9500621SS-20PK internal hard drive:3.27 W
Operating temperature (T-T)
- Savvio ST9300453SS-20PK internal hard drive:5 - 55 °C
- Constellation ST9500621SS-20PK internal hard drive:5 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of ST9300453SS-20PK, ST9500621SS-20PK
28 specifications	A Seagate Savvio ST9300453SS-20PK internal hard drive Model ST9300453SS-20PK View product	B Seagate Constellation ST9500621SS-20PK internal hard drive Model ST9500621SS-20PK View product
Features5 differ
HDD capacityDiffers	300 GB	500 GB
HDD speedDiffers	15000 RPM	7200 RPM
HDD number of cylindersKnown for one	2	Unknown — not stated by the source
HDD number of headsKnown for one	4	Unknown — not stated by the source
Read seek timeDiffers	2.6 ms	8.5 ms
Write seek timeDiffers	3.1 ms	9.5 ms
Average latencyDiffers	2 ms	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1400000 h
Power2 differ
Power consumption (typical)Differs	7.92 W	5.6 W
Power consumption (idle)Differs	4.23 W	3.27 W
Operational conditions4 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Non-operating vibrationDiffers	2.4 G	3 G
Operating shockDiffers	60 G	70 G
Non-operating shockDiffers	300 G	400 G
Weight & dimensions1 differ
WeightDiffers	200 g	183 g

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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