Product comparison · 2 internal hard drives

Dell 400-20084 internal hard drive vs Dell 400-21125 internal hard drive

Key differences

HDD capacity
- 400-20084 internal hard drive:146 GB
- 400-21125 internal hard drive:500 GB
HDD speed
- 400-20084 internal hard drive:10000 RPM
- 400-21125 internal hard drive:7200 RPM
HDD size
- 400-20084 internal hard drive:2.5"
- 400-21125 internal hard drive:3.5"
Interface
- 400-20084 internal hard drive:SAS
- 400-21125 internal hard drive:Serial ATA
Operating voltage
- 400-20084 internal hard drive:5 V
- 400-21125 internal hard drive:5 / 12 V
Data transfer rate
- 400-20084 internal hard drive:6 Gbit/s
- 400-21125 internal hard drive:1.5 Gbit/s

Differences highlightedShow differences only

Comparison of 400-20084, 400-21125
11 specifications	A Dell 400-20084 internal hard drive Model 400-20084 View product	B Dell 400-21125 internal hard drive Model 400-21125 View product
Features4 differ
HDD capacityDiffers	146 GB	500 GB
HDD speedDiffers	10000 RPM	7200 RPM
HDD sizeDiffers	2.5"	3.5"
InterfaceDiffers	SAS	Serial ATA
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Power1 differ
Operating voltageDiffers	5 V	5 / 12 V
Other features2 differ
Product colour	Black	Black
Data transfer rateDiffers	6 Gbit/s	1.5 Gbit/s
Hot-Plug support	Yes	Yes
Internal	Yes	Yes
Compatible productsDiffers	Dell PowerEdge R310 FS/R410/R510 FS/R710/T410/T610 FS	Dell PowerEdge R310 FS

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.