Western Digital Caviar Blue 640GB Hard Disk

Western Digital Caviar Blue 640GB 3.5" 16MB Cache 7200 RPM SATA II WD6400AAKS

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Options (3)

	500 GB $48.95
	250 GB $149.95
	320 GB $34.99

WD Caviar Blue Hard Drives Have A Multitude Of Features To Deliver Rock Solid Performance And Ultra-Cool And Quiet Operation.
Whisperdrive Technology Minimizes Noise To Levels Near The Threshold Of Human Hearing.
Softseek Technology Streamlines Read/Write Seeking Algorithms, Resulting In More Efficient Operation.
640 GB Capacity Holds Up To 128,000 Digital Photos, 160,000 MP3 Files, And Up To 77 Hours Of HD Video.
3 Year Limited Warranty.
Ships In Certified Frustration-Free Packaging
WD Caviar Blue Hard Drives Are Available With Either SATA
Whisperdrive Technology Minimizes Noise To Levels Near The Threshold Of Human Hearing.
Intelliseek - Calculates Optimum Seek Speeds To Lower Power Consumption, Noise, And Vibration.

Western Digital Caviar Blue 640GB image 1

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Specifications Overview

Model	WD6400AAKS
Capacity	640 GB
Cache	16MB
RPM	7200
Interface	SATA 3 Gb/s
Form Factor	3.5"

	Old Name	Current Name	Branding	Data Speed	Port
USB 2.0	USB 2.0	USB 2.0	Hi-Speed USB	480 Mbit/s	diverse
USB 3.0	USB 3.1 Gen 1	USB 3.2 Gen 1x1	SuperSpeed USB	5 Gbit/s	diverse
USB 3.1	USB 3.1 Gen 2	USB 3.2 Gen 2x1	SuperSpeed USB 10Gbps	10 Gbit/s	diverse
USB 3.2	USB 3.2 Gen 2x2	USB 4.0 Gen 2x2	USB4 20Gbps	20 Gbit/s	only USB-C
USB4	USB 4.0 Gen 3x2	USB4 1.0	USB4 40Gbps	40 Gbit/s	only USB-C
USB4v2	USB 4.0 Gen 4	USB4 2.0	USB4 80Gbps	80-120 Gbit/s	only USB-C

Western Digital Caviar Blue 640GB Performance comparison with similar Hard Disk Drives

(Higher is better)

Western Digital Caviar Blue 640GB Performance

Sequential read/write speed, Random 4K read/write speed

Seagate Barracuda 1.5TB ST31500341AS (117th)		108%
Seagate Barracuda 500GB ST3500418AS (117th)		108%
Seagate Barracuda Green 1.5TB ST1500DL003 (117th)		108%
Seagate Laptop SSHD 1TB Hybrid (124th)		104%
Western Digital Caviar Green 2TB WD20EARS (125th)		102%
Western Digital 500GB WD Purple (126th)		~
Western Digital Black 500GB WD5000BPKX (126th)		~
Western Digital Caviar SE16 WD6400AAKS (126th)		~
WD Green 2TB WD20EARX (126th)		~
WD Blue 250GB WD2500AAKX (126th)		~
Western Digital Caviar Blue 640GB (126th)		100%
Seagate Barracuda 250GB ST3250318AS (132nd)		98%
Western Digital 500GB Caviar Blue WD5000AAKS (133rd)		96%
estern Digital 320GB WD3200AAJS (133rd)		96%
Western Digital Red 1TB (133rd)		96%
Samsung 1TB SATA II HD103UJ (136th)		92%
WD Blue 320GB WD3200AAKX (136th)		92%
Seagate FireCuda Gaming SSHD 2TB ST2000LX001 (136th)		92%
Seagate Barracuda 500GB ST3500320AS (136th)		92%
Seagate 500GB Gaming SSHD ST500LM000 (136th)		92%
Seagate 1TB Firecuda (136th)		92%