Buffalo HD-PV250U2/BK external hard drive vs Buffalo HD-PV640U2/BK external hard drive

Comparison of HD-PV250U2/BK, HD-PV640U2/BK

16 specifications	A Buffalo HD-PV250U2/BK external hard drive Model HD-PV250U2/BK View product	B Buffalo HD-PV640U2/BK external hard drive Model HD-PV640U2/BK View product
Hard drive1 differ
HDD capacityDiffers	250 GB	640 GB
Interface	Serial ATA	Serial ATA
Type	HDD	HDD
Ports & interfacesidentical
FireWire 400	No	No
FireWire 800	No	No
Featuresidentical
Product colour	Black	Black
Poweridentical
Bus powered	USB	USB
Power consumption (typical)	2.5 W	2.5 W
Operational conditionsidentical
Operating temperature (T-T)	5 - 35 °C	5 - 35 °C
Operating relative humidity (H-H)	20 - 80%	20 - 80%
Weight & dimensionsidentical
Width	16 mm	16 mm
Depth	130 mm	130 mm
Height	81 mm	81 mm
Weight	190 g	190 g
Other featuresidentical
USB 2.0 ports quantity	1	1
Compatible operating systems	Windows 7/Vista/XP/Server 2003/2008 MacOS X 10.4+	Windows 7/Vista/XP/Server 2003/2008 MacOS X 10.4+

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.