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Silver 2.5 inch SATA hard drive, rectangular metal enclosure with label

Seagate

Seagate ST9750423AS 750GB 5400 RPM 16MB Cache SATA 2.5" laptop hard drive

SKU CH-KZM8-1R01Y MPN ST9750423AS

2.5-inch laptop hard drive with 750 GB capacity, 5400 RPM speed and 16 MB cache over SATA 3.0 Gb/s

  • Total capacity750 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeRetail
  • Cache memory16 MB
  • Rotational speed5,400 RPM
  • 750 GB capacity stores large media libraries
  • 5400 RPM spindle balances speed and quiet operation
  • 16 MB cache accelerates frequent file access
  • SATA 3.0 Gb/s interface fits standard laptop bays
  • 5 inch form factor matches notebook drive slots

Seagate Momentus 750GB laptop drive

The Seagate Momentus ST9750423AS is a 750GB 2.5 inch internal hard drive built for laptop upgrades and replacements. It spins at 5400 RPM with a 16MB cache and connects through a SATA 3.0Gb/s interface. This new drive suits users who need extra storage capacity in a standard notebook form factor.

Check SATA 3.0Gb/s compatibility and 2.5 inch bay

Verify that your laptop accepts a 2.5 inch SATA drive and that its controller supports the 3.0Gb/s link speed. The drive requires a standard SATA data and power connection inside the notebook chassis. Confirm the physical bay height matches your system before ordering.

Steady 5400 RPM throughput for sustained loads

At 5400 RPM the drive delivers consistent transfer rates during long copy sessions or background archiving rather than peaking in short bursts. The 16MB buffer helps smooth sequential workloads such as video recording or large file moves. Performance remains stable across extended use without thermal throttling.

How it compares

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

Price $85.99
Pricier than about 60% of the 645 comparable items (median $66.99).
Total capacity 750 GB
Higher than about 80% of the 419 comparable items (median 320 GB).
Price per TB $114.65 per TB
Cheaper than about 77% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameSeagate
Product lineMomentus
Model nameST9750423AS
Total capacity750 GB
Performance
Rotational speed5,400 RPM
Storage
Cache memory16 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Shipping weight0.11 kg
Package size102 × 70 × 13 mm

Questions about this item

Does the drive ship with mounting screws, cables or a caddy, or must I source them separately?

The retail pack contains only the 2.5 inch drive itself; mounting hardware and SATA data or power cables come from the laptop chassis.

I see only the 750GB capacity listed; are there other capacities or cache sizes for this exact model?

ST9750423AS is a single SKU fixed at 750GB with 16MB cache and 5400 RPM; no alternate capacities or cache options exist for this part number.

What does the 5400 RPM rating mean for everyday laptop use?

The 5400 RPM spindle provides standard notebook performance for OS boot, application launch and media storage in a 2.5 inch SATA form factor.

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