WD Caviar Black 640 GB, SATA 3 Gb/s, 32 MB Cache, 7200 RPM

Price per Unit (piece): $77.00

WD Caviar Black drives combine a high performance electronics architecture with a rock solid mechanical architecture to deliver the perfect storage solution for your fully-loaded PC or maxed out gaming machine. Cool drive operation, no-touch head technology, and leading-edge vibration protection ensure enhanced reliability and sustained data throughput. And we back it all up with a 5-year limited warranty.

Key Features

High Performance Electronics Architecture

Dual processor - Twice the processing power to maximize performance.

Colossal cache - Bigger, faster cache of up to 64 MB means faster performance.

Rock Solid Mechanical Architecture

Dual actuator technology - A head positioning system with two actuators that improves positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy. (2 TB only)

StableTrac - The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking, during read and write operations.

NoTouch ramp load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

Massive Capacity - WD Caviar Black SATA drives are available in capacities
up to 2 TB.

Compatible - We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab™ and Mobile Compatibility Lab to give our customers confidence that our drives will work in their systems.

5 Year Limited Warranty

Ideal For

Power computing applications such as multimedia, video and photo editing, and maxed out gaming computers.

How this WD hard drive protects your data

Data Lifeguard is an exclusive set of data protection features, including shock protection, an environmental protection system and real-time embedded error detection and repair. WD's Data Lifeguard technology automatically finds, isolates, and repairs problems that may develop over the life of a hard drive.
Data Lifeguard Tools are software utilities designed for WD hard drives that work with the embedded Data Lifeguard features to make hard drive installation,diagnostics and repair both simple and worry-free.
ShockGuard instantaneously protects the hard drive against damage from bumps and vibrations while it is running. This technology enables WD Caviar drives to achieve industry-leading shock specifications.

Performance Specifications

Transfer Rates
	Buffer To Host (Serial ATA)	3 Gb/s (Max)

Physical Specifications
	Formatted Capacity	640,135 MB
	Capacity	640 GB
	Interface	SATA 3 Gb/s
	User Sectors Per Drive	1,250,263,728

Physical Dimensions
English
	Height	1.028 Inches
	Length	5.787 Inches
	Width	4.00 Inches
	Weight	1.52 Pounds

Metric
	Height	26.1 mm
	Length	147 mm
	Width	101.6 mm
	Weight	0.69 kg

Environmental Specifications
Shock
	Operating Shock (Read)	30G, 2 ms
	Non-operating Shock	300G, 2 ms

Acoustics
	Idle Mode	25 dBA (average)
	Seek Mode 0	29 dBA (average)
	Seek Mode 3	26 dBA (average)

Temperature (English)
	Operating	32° F to 140° F
	Non-operating	-40° F to 158° F

Temperature (Metric)
	Operating	-0° C to 60° C
	Non-operating	-40° C to 70° C

Humidity
	Operating	5-95% RH non-condensing
	Non-operating	5-95% RH non-condensing

Altitude (English)
	Operating	-1,000 feet to 10,000 feet
	Non-operating	-1,000 feet to 40,000 feet

Altitude (Metric)
	Operating	-305M to 3,050M
	Non-operating	-305M to 12,200M

Vibration
	Operating	0.004 g²/Hz (10 to 300 Hz)
	Non-operating	0.05 g²/Hz (10 to 300 Hz)

	Operating
	Linear	20-300 Hz, 0.75 G (0 to peak)
	Random	0.004 g²/Hz (10 to 300 Hz)

	Non-operating
	Low Frequency	0.05 g²/Hz (10 to 300 Hz)
	High Frequency	20-500 Hz, 4.0G (0 to peak)

Electrical Specifications
Current Requirements
	12 VDC
	Read/Write	490 mA
	Idle	470 mA
	Standby	5 mA
	Sleep	5 mA

	5 VDC
	Read/Write	500 mA
	Idle	420 mA
	Standby	160 mA
	Sleep	160 mA

	Power Dissipation
	Read/Write	8.30 Watts
	Idle	7.70 Watts
	Standby	1.00 Watts
	Sleep	1.00 Watts

As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte per second (MB/s) = one million bytes per second, megabit per second (Mb/s) = one million bits per second, and gigabit per second (Gb/s) = one billion bits per second.