Product comparison · 2 internal hard drives

Buffalo OP-HD2.0T internal hard drive vs Seagate Cheetah 400GB

8specifications compared
7differ
1identical
7known for one product only

Key differences

The Seagate Cheetah 400GB has 2,800 RPM more HDD speed than the Buffalo OP-HD2.0T internal hard drive (10000 RPM vs 7200 RPM). The Buffalo OP-HD2.0T internal hard drive has 2.2 mm more width than the Seagate Cheetah 400GB (104 mm vs 101.8 mm). The Seagate Cheetah 400GB has 117 mm more depth than the Buffalo OP-HD2.0T internal hard drive (147 mm vs 30 mm). HDD capacity: 2 TB on the Buffalo OP-HD2.0T internal hard drive, 400 GB on the Seagate Cheetah 400GB. Interface: Serial ATA on the Buffalo OP-HD2.0T internal hard drive, Fibre Channel on the Seagate Cheetah 400GB.

HDD capacity
- OP-HD2.0T internal hard drive:2 TB
- Cheetah 400GB:400 GB
HDD speed
- OP-HD2.0T internal hard drive:7200 RPM
- Cheetah 400GB:10000 RPM
Interface
- OP-HD2.0T internal hard drive:Serial ATA
- Cheetah 400GB:Fibre Channel
Width
- OP-HD2.0T internal hard drive:104 mm
- Cheetah 400GB:101.8 mm
Depth
- OP-HD2.0T internal hard drive:30 mm
- Cheetah 400GB:147 mm
Height
- OP-HD2.0T internal hard drive:170 mm
- Cheetah 400GB:26.1 mm
Weight
- OP-HD2.0T internal hard drive:899 g
- Cheetah 400GB:800 g

Side by side

Differences highlightedShow differences only

Comparison of OP-HD2.0T, Cheetah 400GB
15 specifications	A Buffalo OP-HD2.0T internal hard drive Model OP-HD2.0T View product	B Seagate Cheetah 400GB View product
Features3 differ
HDD capacityDiffers	2 TB	400 GB
HDD speedDiffers	7200 RPM	10000 RPM
InterfaceDiffers	Serial ATA	Fibre Channel
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	16 MB
Read seek timeKnown for one	Unknown — not stated by the source	3.9 ms
Write seek timeKnown for one	Unknown — not stated by the source	4.2 ms
Average latencyKnown for one	Unknown — not stated by the source	3 ms
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	104 mm	101.8 mm
DepthDiffers	30 mm	147 mm
HeightDiffers	170 mm	26.1 mm
WeightDiffers	899 g	800 g
Poweridentical
Operating voltageKnown for one	5 / 12 V	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.

More internal hard drive comparisons

All internal hard drive comparisons