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320GB 2.5" Hitachi Travelstar Z7K320 7200RPM SATA 7mm Notebook Drive with 16MB Cache - New, 3 Year Warranty (0A78743)	4 Days	$84.99

Hitachi

320GB Travelstar™ Z7K320 Hard Disk Drive

2.5-Inch | SATA 3.0Gb/s | 7200RPM | 16MB Cache

High-performance storage for notebook PCs

7mm thickness for design flexibility

Travelstar™ Z7K320 is the industry's first 7200 RPM, 7mm, 2.5-inch hard drive with capacities ranging from 160GB to 320GB. The 320GB per platter one-disk models are designed as a direct replacement for standard 9.5mm HDDs, for use in notebook PCs, external storage and compact systems. The Z7K320 offers design flexibility to accommodate new thinner and more robust devices/systems and delivers up to 18% better application performance than 5400 RPM models of the same capacity.

Highlights

New 7mm z-height for greater design flexibility
7200 RPM high-performance HDD
Best-of-breed acoustics
Low power consumption
Halogen-free for eco-friendly footprint
Serial ATA 3Gb/s
Free Installation Videos
Warranty Safe Upgrade.
3 Year Warranty

Applications

Notebook and ultra-portable PCs
External Storage
Compact desktop systems
Gaming PCs
Small-form-factor video devices

SPECS

320GB Hitachi Travelstar Z7K320 Specifications:

Specifications

Form Factor

3.5″ HDD

Interface

SATA 3.0Gb/s

Capacity¹

320GB

Formatted Capacity²

298GiB

Rotational Speed

7,200 RPM

Cache / Data Buffer

16MB

Manufacturer Model Number

HTS723232A7A364

Format

Unformatted (Instructions on formatting here)

Physical

Height (max)

7mm (0.275″)

Width (max)

70mm (2.755″)

Length (max)

100mm (3.937″)

Weight (typical)

95g (0.20 lbs.)

Data Heads

Number of Disks

Bytes per Sector

512

Reliability³

Contact Start-Stops

600,000

Warranty

3 Year Hitachi Warranty

Performance

Transfer Rate (Max)

3.0Gb/s

Track-to-track Seek

1.0ms

Average Seek Time

13.0ms

Power

Maximum Start Current, DC

2.0 Amps

Seek Power

2.1 Watts

Read Power

1.8 Watts

Write Power

1.8 Watts

Idle Mode

1.7 Watts

Idle Mode, Active

1.0 Watts

Idle Mode, Low Power

0.8 Watts

Standby Mode

0.2 Watts

Sleep Mode

0.1 Watts

Environmental (Operating)

Shock

400 G max at 2ms

Ambient Temperature (°F)

32°F to 140°F

Ambient Temperature (°C)

0°C to 60°C

Altitude

-304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

Environmental (Non-Operating)

Shock

1000 G max at 1ms

Ambient Temperature (°F)

-40°F to 149°F

Ambient Temperature (°C)

-40°C to 65°C

Altitude

-304.8 m to 12,192 m (-1000 ft to 40,000+ ft)

Acoustics

Idle (Typical)

2.3 bels

Seek (Typical)

2.4 bels

1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.
In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
Specific application environments such as temperature and duty cycle will affect the overall reliability rates.

Manufacturer provided specifications for Hitachi p/n 0A78743 UPC#: 829686001688