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Silver 3.5 inch bare hard drive with green circuit board visible

Seagate

Seagate BarraCuda 7200.10 ST3400620A 400GB 7200 RPM 16MB Cache IDE Ultra ATA100 3.5" internal hard drive

SKU CH-EP5V-DTPZJ MPN ST3400620A

400 GB IDE desktop drive with 7200 RPM, 16 MB cache and perpendicular recording

  • Total capacity400 GB
  • Interface typeIDE Ultra ATA100 / ATA-6
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory16 MB
  • 400 GB capacity stores large media libraries
  • 7200 RPM spindle speed delivers fast data access
  • 16 MB cache buffer improves burst transfer rates
  • Perpendicular recording technology increases areal density and reliability
  • 11 ms average seek time reduces file retrieval latency

Ideal for legacy IDE systems

This Seagate BarraCuda 7200.10 drive delivers 400GB of storage on an IDE Ultra ATA100 interface. It spins at 7200 RPM with a 16MB cache and uses perpendicular recording technology. The 3.5 inch form factor fits standard desktop bays and the unit is supplied as a bare drive in new condition.

Suits owners of older motherboards

Builders maintaining or repairing systems that only accept IDE Ultra ATA100 / ATA-6 connections will find this drive a direct fit. It is not for systems that require a Serial ATA interface or capacities beyond 400GB. The bare drive packaging means no cables or mounting hardware are included.

The deciding specification is the IDE Ultra ATA100

This single attribute determines whether the drive can connect to the target motherboard. Average seek time is 11ms, average write time is 12ms and average latency is 4.16ms. RoHS compliance and Enhanced G-Force Protection are also featured.

How it compares

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

Price $71.99
Cheaper than about 63% of the 4,938 comparable items (median $107.99).
Total capacity 400 GB
Lower than about 84% of the 2,372 comparable items (median 2 TB).
Price per TB $179.97 per TB
Pricier than about 76% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda 7200.1
Model nameST3400620A
Total capacity400 GB
Performance
Rotational speed7,200 RPM
Average seek time11 ms
Mean write time12 ms
Mean latency4.16 ms
Storage
Cache memory16 MB
Ports & slots
Interface typeIDE Ultra ATA100 / ATA-6
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.45 kg
Package size146 × 102 × 36 mm

Questions about this item

What is the maximum throughput of the IDE Ultra ATA100 interface on the ST3400620A?

The IDE Ultra ATA100 interface on the ST3400620A is capped at 100 MB/s in practice.

What physical mounting space does the 3.5-inch ST3400620A require?

The ST3400620A requires a standard 3.5-inch drive bay with IDE data and Molex power connectors.

How do I set the jumpers when installing the ST3400620A as a single drive?

Configure the jumper block to Master or Cable Select for single-drive installation; the common mistake is leaving it in Slave position.

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