HP 594044-001 internal hard drive vs HP 656621-001 internal hard drive

Comparison of 594044-001, 656621-001

9 specifications	A HP 594044-001 internal hard drive Model 594044-001 View product	B HP 656621-001 internal hard drive Model 656621-001 View product
Features1 differ
HDD capacityDiffers	250 GB	320 GB
HDD speed	7200 RPM	7200 RPM
HDD size	2.5"	2.5"
Interface	Serial ATA	Serial ATA
Component for	Laptop	Laptop
Average seek timeKnown for one	—Unknown — not stated by the source	11 ms
Poweridentical
Operating voltage	5 V	5 V
Weight & dimensionsidentical
HeightKnown for one	9.5 mm	—Unknown — not stated by the source
Other features1 differ
Compatible productsDiffers	ProBook 6440b, ProBook 6540b, EliteBook 8440p	EliteBook 2760p

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.