Samsung Spinpoint MP4 HM640JJ (640 GB)

Samsung Spinpoint MP4 HM640JJ vs Comparable 2.5" SATA Hard Disks

Disk	RPM	Cache (MB)	Size (GB)	Warranty Years	Best Price	Value (GB/$)

Seagate Momentus ST9640322AS	5400	8	640		84.99	7.53
Hitachi 0J11562	5400	8	640	3	89.99	7.11
Western Digital Scorpio Blue WD6400BPVT	5400	8	640	3	99.24	6.45
Seagate Momentus ST906403N1A1AS-RK	5400	8	640	3	113.98	5.62
Samsung Spinpoint MP4 HM640JJ	7200	16	640			0.00

Manufacturer's Specs

General
Interface	SATA 3.0Gbps
Buffer DRAM Size	16 MB
Capacity	640 GB
Rotational Speed	7,200 RPM
Performance
Drive Ready Time(typical)	4 sec
Data Transfer Rate / Buffer to/from Host(Max.)	300 MB/s
Data Transfer Rate / Media to/from Buffer(Max.)	189 MB/s
Average Seek time(typical)	11 ms
Power
Standby (typical)	0.2 W
Read/Write (typical)	2.5 W
Sleep (typical)	0.2 W
Spin-up Current (Max.)	1000 mA
Idle (typical)	0.85 W
Seek (typical)	2 W
Voltage	+5V+-5%
Acoustics
Idle	2.6 Bel
Performance Seek	2.8 Bel
Reliability
Non-recoverable Read Error	1 sector in 1014 bits
Physical
Width	69.85 mm
Length	100.3 mm
Height (Max.)	9.5 mm
Weight (avg.)	119 g