We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver 2.5-inch laptop hard drive bare unit, 9.5mm high

Toshiba

Toshiba MK1252GSX 120GB 5400 RPM 8MB SATA 3.0Gb/s 2.5" laptop hard drive

SKU CH-ZQFD-5742G MPN MK1252GSX

Stores 120GB on a 2.5-inch 5400 RPM SATA drive with 8MB cache and 9.5mm height

  • Total capacity120 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Cache memory8 MB
  • Average seek time12 ms
  • 120 GB capacity stores more files and applications
  • 5400 RPM spindle speed balances performance and power draw
  • 8 MB cache smooths data access for everyday tasks
  • SATA 3.0 Gb/s interface fits standard laptop drive bays
  • 5 mm height suits most 2.5" notebook chassis

Capacity and form factor

This Toshiba MK1252GSX is a 120GB 2.5-inch laptop internal hard drive spinning at 5400 RPM with 8MB cache. It suits users replacing a failed drive in an older notebook or adding affordable bulk storage to a compatible bay.

SATA 3.0Gb/s interface limit

The drive connects through a SATA 3.0Gb/s interface, which caps the maximum theoretical transfer rate at 300MB/s. Actual sustained throughput will be lower and is governed by the mechanical media transfer rate of 801MB/s quoted for the platters.

Height and connector check

Verify that your laptop accepts a 9.5mm high 2.5-inch SATA drive and that a free SATA data and power connector are available inside the chassis. Some ultra-thin models only fit 7mm drives and will not accommodate this unit.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $36.99
Cheaper than about 84% of the 645 comparable items (median $66.99).
Total capacity 120 GB
Lower than about 84% of the 419 comparable items (median 320 GB).
Price per TB $308.25 per TB
Pricier than about 61% of the 416 comparable items (median $233.48 per TB).

New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameTOSHIBA
Model nameMK1252GSX
Total capacity120 GB
Performance
Average seek time12 ms
Rotational speed5,400 RPM
Storage
Cache memory8 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Shipping weight0.45 kg
Package size152 × 102 × 51 mm

Questions about this item

Should I choose this 120GB 5400 RPM model or a higher-capacity 2.5" SATA drive?

This 120GB model suits light OS and document workloads; if you store media or large applications, select a larger-capacity 2.5" SATA drive with the same 9.5mm height.

What does the 801MB/sec media transfer rate mean once the drive is installed in a laptop?

The 801MB/sec is the internal media rate; real-world throughput in a laptop will be limited by the SATA 3.0Gb/s link and system overhead, so expect lower sustained speeds.

How does the SATA 3.0Gb/s interface cap performance in practice?

The SATA 3.0Gb/s interface limits burst transfers to 3.0Gb/s, so even though the drive's media rate is 801MB/sec, the bus ceiling determines maximum sustained throughput.

More in 2.5-Inch Internal Laptop HDDs

Similar items