Product comparison · 2 internal hard drives

HP 320GB SATAII 7200rpm vs HP QK554AT internal hard drive

Key differences

HDD capacity
- 320GB SATAII 7200rpm:320 GB
- QK554AT internal hard drive:500 GB
Interface
- 320GB SATAII 7200rpm:Serial ATA II
- QK554AT internal hard drive:Serial ATA
Data transfer rate
- 320GB SATAII 7200rpm:3 Gbit/s
- QK554AT internal hard drive:6 Gbit/s

Differences highlightedShow differences only

Comparison of 320GB SATAII 7200rpm, QK554AT
18 specifications	A HP 320GB SATAII 7200rpm View product	B HP QK554AT internal hard drive Model QK554AT View product
Features2 differ
HDD capacityDiffers	320 GB	500 GB
HDD speed	7200 RPM	7200 RPM
InterfaceDiffers	Serial ATA II	Serial ATA
Storage drive buffer sizeKnown for one	Unknown — not stated by the source	8 MB
SMART technologyKnown for one	Unknown — not stated by the source	Yes
Native Command Queuing (NCQ)Known for one	Unknown — not stated by the source	Yes
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	101.6 mm
DepthKnown for one	Unknown — not stated by the source	25.4 mm
HeightKnown for one	Unknown — not stated by the source	25.4 mm
Other features1 differ
Product colourKnown for one	Unknown — not stated by the source	Metallic
Data transfer rateDiffers	3 Gbit/s	6 Gbit/s
Internal	Yes	Yes
Number of pinsKnown for one	Unknown — not stated by the source	7
CertificationKnown for one	Unknown — not stated by the source	RoHS
Drive device heightKnown for one	Unknown — not stated by the source	2.54 cm
Storage drive controllerKnown for one	Unknown — not stated by the source	SATA
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.