Free Shipping available on most orders $49.00 & up.

Get Details. »

We're sorry, but this item is no longer for sale. However, there may be more Internal Hard Drives and SSD items available.

We recommend 750GB WD Scorpio Black 2.5-inch 9.5mm SATA 3.0Gb/s 7200RPM Hard Drive (Mfr P/N: WD7500BPKT) from Western Digital for $97.99 as a suitable alternative.

Seagate

750GB Momentus Hard Disk Drive

2.5-Inch | SATA 3.0Gb/s | 7200RPM | 16MB Cache
Seagate® Momentus® hard drives deliver high capacity and performance. If you require reliable and robust laptop storage, Momentus drives are for you.
  • Seagate SmartAlign™ technology provides a transition to 4K sectors without the need for software utilities
  • 16MB cache size to enhance your application performance
  • Support for S.M.A.R.T. drive monitoring and reporting.

750GB Seagate Momentus Specifications:

Specifications

Form Factor
2.5″ HDD
Interface
SATA 3Gb/s NCQ
Capacity1
750GB
Formatted Capacity2
697GiB
Rotational Speed
7,200 RPM
Cache / Data Buffer
16MB
Manufacturer Model Number
ST9750420AS
RoHS Compliant
Yes
Format

Physical

Height (max)
9.5mm (0.370″)
Width (max)
69.85mm (2.75″)
Length (max)
100.35mm (3.951″)
Weight (typical)
115g (0.254 lbs.)
Data Heads
4
Number of Disks
2
Guaranteed Sectors
1,465,149,168
Bytes per Sector
512
Areal Density
541Gb/in2

Reliability3

MTBF (Mean Time Between Failures)
500,000 hours
Contact Start-Stops
>600,000
Annual Failure Rate
0.5%
Nonrecoverable Read Errors
1 per 1014 bits read
Warranty
1 Year Seagate Warranty

Performance

Transfer Rate (Max)
3.0Gb/s
Track-to-track Seek
1.5ms
Average Seek Time
11.0ms
Average Latency
5.5ms

Power

Maximum Start Current, DC
1.0 Amp
Seek Power
2.5 Watts
Read Power
2.1 Watts
Write Power
2.3 Watts
Idle Mode
1.5 Watts
Idle Mode, Active
0.95 Watts
Idle Mode, Low Power
0.70 Watts
Standby Mode
0.15 Watts
Sleep Mode
0.15 Watts

Environmental (Operating)

Shock
350 G max at 2ms
1000 G max at 1ms
1000 G max at 0.5ms
Ambient Temperature (°F)
32°F to 140°F
Ambient Temperature (°C)
0°C to 60°C
Vibration
2.0 G (0 to peak, 5-200 Hz)
1.0 G (0 to peak, 200-500 Hz)
Relative Humidity (non-condensing)
5% to 95%
Altitude
-304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

Environmental (Non-Operating)

Shock
800 G max at 2ms
Ambient Temperature (°F)
-40°F to 158°F
Ambient Temperature (°C)
-40°C to 70°C
Vibration
5 Gs (0 to peak, 5-500 Hz)
Relative Humidity (non-condensing)
5% to 95%
Altitude
-304.8 m to 12,192 m (-1000 ft to 40,000+ ft)

Acoustics

Idle (Typical)
2.3 bels
Seek (Typical)
2.6 bels
  1. 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.
  2. 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.
  3. Specific application environments such as temperature and duty cycle will affect the overall reliability rates.
Manufacturer provided specifications for Seagate p/n ST9750420AS UPC#: 718659158118

Customer Ratings

Write a Review 4.2 / 5 6 out of 7 (86%) reviewers would recommend this product
Verified Buyer
Reviewer: Anonymous Location: VENEZUELA Age: 25-34 Experience Level: IT Professional
Rating: 5/5 EXCELENTE DISCO DURO, MUY RAPIDO Y SILENCIOSO. August 1, 2013 EXCELENTE DISCO DURO, MUY RAPIDO Y SILENCIOSO.

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: NC Age: Over 65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Top Notch! March 3, 2013 As usual, OWC comes through with a fine product!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Albuquerque, New Mexico Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 4/5 Lappy runs faster December 31, 2012 Lappy runs faster then when I first purchased it. Great product and very fast shipping. Ordered Friday morning and got it Monday at 12.39pm. I couldn't ask for better service and product. Thanks and happy new year to all!

I would recommend this item to a friend!

Verified Buyer
Reviewer: Anonymous Location: Calvert County MD Age: 18-24 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 GREAT! December 27, 2012 This product is great! Very easy to install but the website had fuzzy instructions. I only buy my Macbook Pro parts here at OWC.

I would recommend this item to a friend! This review is from 750GB Seagate Momentus 2.5-inch 9.5mm SATA 3.0Gb/s 7200RPM Hard Drive with 16MB Cache.

Top 250 Contributor
Reviewer: Anonymous Location: Oakland, CA Age: 55-65 Experience Level: Power User Owned Product: over 6 months
Rating: 2/5 Fast, but lasted only 15 months August 7, 2012 I purchased this disk as a bundle with the OWC Data Doubler. It worked great while it lasted, but didn't last as long as I would have hoped. Luckily it failed slowly (going off-line, then coming back immediately), so I was being extra careful with backups. This disk comes with a 1-year warranty, and it lasted more than a year, so I guess I got what I paid for--I was just hoping for more than that.

Reviewer: Eddie Location: SC, where not all idiots. Age: 25-34 Experience Level: Noob Owned Product: less than a month
Rating: 5/5 So simple, a country boy could do it! March 23, 2012 I am by no means a computer wiz kid. If you want something frozen, I'm your guy. Instructions were a little vague about formatting the hard drive and I ended up reformatting my old drive. But it is what it is, and I'm now typing this review on my laptop with a brand new 750GB hard drive. As far as the difference between the 7200 RPM and 5200 RPM, I do not see it. I can hear and feel it as it runs a little warmer and I can hear the disk spinning when it starts doing its thing. I can live with that. I'm still amazed I didn't let the magic smoke out of my laptop! I would recommend this to anyone wanting to upgrade from their old 160GB drive. Or what ever size you had.

I would recommend this item to a friend!

Verified Buyer
Reviewer: DABnvh Location: California Age: 25-34 Experience Level: IT Professional Owned Product: less than a month
Rating: 4/5 Excelent price/quality/capacity - too much vibration August 9, 2011 I could notice the difference instantaneously, very fast data fetching. Only problem: 7200 RPM do a lot of vibration on my MacBook (early 2008). If you can deal with that (after the second day you won't even notice it) then this is THE PERFECT DISK UPGRADE!

I would recommend this item to a friend!

Seagate 750GB Momentus Mfr P/N: ST9750420AS OWC SKU: SEAST9750420AS Internal 2.5" Hard Drive Seagate 1 Year Limited Warranty
Sold Out