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Silver 3.5 inch bare hard drive with green circuit board visible on underside

Seagate

Seagate Barracuda 7200.7 Plus ST3120026A 120GB 7200 RPM 8MB IDE 3.5" internal hard drive

SKU CH-J36W-GDVJK MPN ST3120026A

120 GB desktop drive spins at 7200 RPM with 8 MB cache and IDE Ultra ATA100 interface

  • Total capacity120 GB
  • Interface typeIDE Ultra ATA100 / ATA-6
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory8 MB
  • 7200 RPM spindle speed delivers responsive desktop performance
  • 8 MB cache buffers bursts for smoother data flow
  • 120 GB capacity stores operating system and applications
  • Ultra ATA 100 interface provides up to 100 MB/s transfer rate
  • 350 Gs non-operating shock rating protects data during handling

Seagate Barracuda 7200.7 Plus 120GB IDE

This new 3.5 inch desktop internal hard drive delivers 120GB of storage on an IDE Ultra ATA100 interface. It spins at 7200 RPM with an 8MB cache and features the 3D Defense System for 350 Gs non-operating shock protection.

Suited for legacy IDE systems needing a 120GB drive

This drive fits older desktops or servers that still use an IDE Ultra ATA100 connection and a standard 3.5 inch bay. It is not for builds that require a different interface, higher capacities, or lower profiles than the 1.0 inch height.

The deciding spec is the IDE Ultra ATA100 interface

Only motherboards or controllers with an IDE Ultra ATA100 port can use this drive. Average seek time is 11.5ms and average latency is 4.16ms, but without the matching interface the drive cannot connect at all.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $61.99
Cheaper than about 69% of the 4,938 comparable items (median $107.99).
Total capacity 120 GB
Lower than about 96% of the 2,372 comparable items (median 2 TB).
Price per TB $516.58 per TB
Pricier than about 90% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarracuda 7200.7 Plus
Model nameST3120026A
Total capacity120 GB
Performance
Rotational speed7,200 RPM
Average seek time11.5 ms
Mean latency4.16 ms
Storage
Cache memory8 MB
Ports & slots
Interface typeIDE Ultra ATA100 / ATA-6
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.65 kg
Package size203 × 152 × 51 mm

Questions about this item

Will the ST3120026A work on a motherboard with an IDE Ultra ATA100 controller?

The drive uses an IDE Ultra ATA100 / ATA-6 interface and will operate at the host controller's supported speed.

How can I verify the ST3120026A is performing correctly after installation?

Check that the BIOS detects the full 120GB capacity and run a diagnostic tool to confirm 7200 RPM operation and an 8.5ms seek time.

What is included with the ST3120026A bare drive and what must be purchased separately?

The bare drive includes the 3.5" unit only; an IDE data cable, mounting screws and a 4-pin Molex power adapter are not included.

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