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Seagate BarraCuda 1TB Internal Hard Drive HDD – 2.5 Inch SATA 6 Gb/s 5400 RPM 128MB Cache for PC Laptop (ST1000LM048)
Seagate

Seagate BarraCuda 1TB Internal Hard Drive HDD

Bottom line: The Seagate BarraCuda 1TB Internal Hard Drive HDD ($139.99 on Amazon as of 2026-10-07): 1TB of storage in a 2.5-inch form factor for laptops and small PCs; main trade-off: 5400 RPM spindle is slower than 7200 RPM drives and far slower than SSDs.

$139.99

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Buy on Amazon — $139.99 Compare to similar external storage

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

Mike Perry — Hardware researcher since 2014. For external drives and portable storage, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 1TB of storage in a 2.5-inch form factor for laptops and small PCs
  • ✓ SATA 6 Gb/s interface fits standard laptop and desktop SATA ports
  • ✓ 128MB cache plus Seagate caching tech for faster loading of frequent files
  • ✓ Suited to bulk media libraries, game archives and backups
  • ✓ Two-year limited warranty from Seagate

Cons

  • ✗ 5400 RPM spindle is slower than 7200 RPM drives and far slower than SSDs
  • ✗ Noticeably slower boot and app load times if used as the OS drive
  • ✗ Mechanical platters are more vulnerable to drops than solid-state storage
  • ✗ Internal drive only: needs a separate enclosure for USB external use

Manufacturer description

The Seagate BarraCuda 1TB internal hard drive (ST1000LM048) is a 2.5-inch SATA drive for laptop upgrades and compact PC builds. Use it when you need more room for files and don't need solid-state speed. It connects over SATA 6 Gb/s, spins at 5400 RPM, and pairs a 128MB cache with Seagate's caching technology so frequently used data loads faster. That combination suits bulk storage: photo and video libraries, game archives, project folders and backups. If your laptop has a 2.5-inch SATA bay, the BarraCuda can replace a full or aging drive and give you more space. Desktop users can mount it in…

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SpecPicks Verdict

SpecPicks scored Seagate BarraCuda 1TB Internal Hard Drive HDD using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Seagate's external storage 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 external storage 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.

Frequently Asked Questions

Will the Seagate BarraCuda ST1000LM048 fit my laptop?

It is a 2.5-inch drive with a SATA 6 Gb/s interface, so it fits laptops with a 2.5-inch SATA bay. Before you buy, check the drive height your laptop's bay allows against the dimensions on the product listing.

Is a 5400 RPM drive fast enough to run Windows?

It will work as a boot drive, and the 128MB cache helps with files you open often. But a 5400 RPM hard drive boots and loads apps more slowly than an SSD. For the best responsiveness, put the OS on an SSD and use this 1TB drive for storage.

Can I install this 2.5-inch hard drive in a desktop PC?

Yes. It connects to any standard SATA data and power connector. Mount it in a 2.5-inch bay, or use a 2.5-to-3.5-inch adapter bracket if your case only has 3.5-inch slots.

What warranty comes with the Seagate BarraCuda 1TB?

Seagate includes a two-year limited warranty. Check the product listing or Seagate's support site for the current coverage terms and how to register.

Can I use this drive as an external USB hard drive?

It is an internal SATA drive, so it has no USB port of its own. To use it externally, put it in a 2.5-inch SATA-to-USB enclosure.

Key Features

  • The BarraCuda mobile internal hard drive is the go to upgrade for on the go computing thanks to big capacity in a small form factor
  • Tackle projects, maneuver applications, and multitask like a pro with a wide range of available capacities
  • Features specialized caching technology for optimized data flow and faster loading
  • Confidently rely on portable hard drive technology backed by 20 years of innovation
  • Enjoy long term peace of mind with the included two year limited warranty
  • The available storage capacity may vary.

Full Specifications

BrandSeagate
ColorNot Available
Model NameST1000LM048
Read Speed6 gigabytes_per_second
Unit Count1 Count
Form Factor2.5-inch
Model NumberST1000LM048
CompatibilityPC
Built-In MediaBarraCuda® 1TB SATA
Item Type NameSeagate 1TB BarraCuda SATA 6Gb/s 128MB Cache 2.5-Inch 7mm Internal Hard Drive (ST1000LM048)
Hard-Drive Size1 TB
Mfr Part NumberST1000LM048
Number of Items1
Special FeatureHigh-capacity 1TB 2.5" Internal Laptop Hard Drive for extensive storage needs
Hardware PlatformPC
Installation TypeNot Specified
Compatible DevicesLaptop
Data Transfer Rate750 gigabits_per_second
Enclosure MaterialAluminum
Additional FeaturesHigh-capacity 1TB 2.5" Internal Laptop Hard Drive for extensive storage needs
Full listing titleSeagate BarraCuda 1TB Internal Hard Drive HDD – 2.5 Inch SATA 6 Gb/s 5400 RPM 128MB Cache for PC Laptop (ST1000LM048)

Ready to buy?

Seagate BarraCuda 1TB Internal Hard Drive HDD – 2.5 Inch SATA 6 Gb/s 5400 RPM 128MB Cache for PC Laptop (ST1000LM048) 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.

Buy on Amazon — $139.99

*Price sourced from Amazon.com. Last updated 2026-10-07. Price and availability subject to change.

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Seagate BarraCuda 1TB Internal Hard Drive HDD – 2.5 Inch SATA 6 Gb/s 5400 RPM 128MB Cache for PC Laptop (ST1000LM048)
$139.99
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