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  • MX23360: 500GB Momentus 7200.4 SATA 2.5in HDD w/ 16MB Cache

500GB Momentus 7200.4 SATA 2.5in HDD w/ 16MB Cache

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Sale Ends: Dec 31, 2014 23:59 MST
  • SKU: MX23360
  • ILC: ST9500420AS
  • Part #: ST9500420AS
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Product Info

Highest Available Notebook Performance
The Seagate Momentus 7200.4 drive delivers the highest available laptop hard drive capacity while satisfying today’s need for desktop performance in a notebook computer. System builders can count on extending the life of their 7200-RPM laptops by eliminating the need to replace or upgrade due to performance obsolescence issues. All this without sacrificing battery life, because these new 7200-RPM drives draw only slightly more power than a 5400-RPM laptop drive.

When it comes to getting more time back in your day, nothing feels better than a well-performing laptop. Our Momentus 7200-RPM drives can give precious moments back when you really need them. In fact, Seagate 7200-RPM drives can shut your system down 34 percent faster, and opening big files can be up to 30 seconds faster than a 5400-RPM drive can manage. When it’s your turn to shine, your 7200-RPM Seagate drive won’t keep you waiting.


  • Highest available notebook performance
  • 500-GB capacity
  • Native Command Queuing
  • Green features:
    • Lowest-power 7200-RPM laptop hard drive yet
    • Ramp load features improve idle power consumption
  • State-of-the-art error correction
  • Fluid dynamic bearing motor
  • Support for S.M.A.R.T. drive monitoring and reporting
  • Support for Read Multiple and Write Multiple commands


Model Number ST9500420AS
Capacity 500GB
Interface SATA 3 Gb/s NCQ
Cache 16MB
Form Factor 2.5-inch
Areal density (avg) 394 Gbits/inch2
Guaranteed Sectors 976,773,168
Spindle Speed 7200 rpm
Average latency 4.17 msec
Random read seek time 11.0 msec
Random write seek time 13.0 msec
Reliability/Data Integrity  
Recording Method 16/17 EPRML
Head-Rest Method QuietStep™
Ramp Load
Load / unload cycles 600,000
Nonrecoverable Read Errors per Bits Read 1 per 10E14
Power Management  
Power (W)  
  Seek, Typical 1.554 Watts
  Idle, Typical 0.67 Watts
Temperature (°C)  
  Operating 0° C to 60 ° C
  Non-operating -40° C to 70 ° C
Shock (Gs)  
  Operating: 2ms 350G
  Non-operating: 1ms 1000G
Acoustics (bels–sound power)  
  Idle, Typical 2.3
  Seek, Typical 2.5
Height 9.5 mm (0.370 inches)
Width 69.85 mm (2.750 inches)
Length 100.35 mm (3.951 inches)
Weight 110 grams (0.238 pounds)


3 Year Limited Warranty