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Seagate Momentus Thin 320 GB 7200RPM SATA 3Gb/s 16MB Cache 2.5-Inch Internal Notebook Hard Drive ST320LT009
Seagate

Seagate Momentus Thin 320 GB 7200RPM SATA 3Gb/s 16MB Cache 2.5-Inch Internal Notebook Hard Drive ST320LT009

Bottom line: The Seagate Momentus Thin 320 GB 7200RPM SATA 3Gb/s 16MB Cache 2.5-Inch is a specs-and-price decision rather than a crowd-consensus one in the PC & gaming hardware category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ 7mm z-height form factor enables thin chassis design for all segments of laptop computing
  • ✓ Backed by Seagate's warranty and support channels

Cons

  • ✗ Check the listed dimensions, connectors and platform compatibility against your setup before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

Seagate clearly demonstrates how to help differentiate, increase profitability and meet market demand for slim computing. The 2.5-Inch form factor enables compromise-free, cost-effective and reliable storage for slim, entry-level laptops, high-end net books, ultraportable and CE devices. Seagate MomentusThin drives come in 500, 320, 250 and 160GB capacities, to provide the right capacity points for full-functioning computing devices. For performance enthusiasts, check out the 7200-RPM Momentus Thin drive. Users now have 16MB of cache on both the mainstream 5400-RPM and the high-performance…

SpecPicks Verdict

SpecPicks scored Seagate Momentus Thin 320 GB 7200RPM SATA 3Gb/s 16MB Cache 2.5-Inch… using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Seagate's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • 7mm z-height form factor enables thin chassis design for all segments of laptop computing
  • Seagate Smart Align technology provides a transition to 4K sectors without the need for software utilities.
  • Self-Encrypting Drives mitigate data breaches, comply with data protection regulations and preserve brand recognition
  • Self-Encrypting Drives with FIPS 140-2 certification are approved for the U.S. and Canadian governments

Full Specifications

BrandSeagate
Form Factor2.5-inch
Model NumberST320LT009
Hard Disk Size320 GB
Hard-Drive Size320 GB
Mfr Part NumberST320LT009
Number of Items1
Special FeaturePortable
Hardware Platformlaptop
Installation TypeInternal Hard Drive
Compatible DevicesLaptop
Data Transfer Rate3 gigabits_per_second
Additional FeaturesPortable
Hard Disk InterfaceSerial ATA-300
Hard Disk Form Factor2.5 inches
Hardware ConnectivitySATA 3.0 Gb/s
Connectivity TechnologySATA
Digital Storage Capacity320 GB
Specific Uses For ProductPersonal
Hard Disk Rotational Speed7200 rpm

Ready to buy?

Seagate Momentus Thin 320 GB 7200RPM SATA 3Gb/s 16MB Cache 2.5-Inch Internal Notebook Hard Drive ST320LT009 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Seagate Momentus Thin 320 GB 7200RPM SATA 3Gb/s 16MB Cache 2.5-Inch Internal Notebook Hard Drive ST320LT009
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