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 3.5 inch SATA bare hard drive with green circuit board visible

Seagate

Seagate BarraCuda 7200.10 ST3400620AS 400GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-RDWV-R4Z2T MPN ST3400620AS

A 400 GB desktop hard drive spinning at 7200 RPM with 16 MB cache and SATA 3.0 Gb/s interface for reliable internal storage

  • Total capacity400 GB
  • Interface typeSATA 3.0Gb/s
  • 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 speeds up file access
  • 16 MB cache buffer smooths burst transfers
  • SATA 3.0 Gb/s interface fits standard desktop boards
  • Perpendicular recording technology boosts areal density and reliability

Capacity and interface

The Seagate BarraCuda 7200.10 ST3400620AS is a 400GB 3.5" internal hard drive with a SATA 3.0Gb/s interface. It suits desktop builders who need a new drive for an older SATA system or a secondary storage volume.

Sustained workload behaviour

The drive spins at 7200 RPM with a 16MB cache, yielding an 8.5ms average seek time and a 10ms average write time. Perpendicular recording technology supports consistent throughput during extended file transfers rather than only in short bursts.

Build quality and daily implications

Enhanced G-Force Protection guards against handling damage while Clean Sweep calibration and Directed Offline scan diagnostics maintain data integrity. The bare-drive packaging means mounting screws and cables must be supplied separately.

How it compares

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

Price $42.99
Cheaper than about 84% 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 $107.48 per TB
Pricier than about 65% of the 2,365 comparable items (median $62.21 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 nameSeagate
Product lineBarraCuda 7200.1
Model nameST3400620AS
Total capacity400 GB
Performance
Rotational speed7,200 RPM
Average seek time8.5 ms
Mean write time10 ms
Mean latency4.16 ms
Storage
Cache memory16 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.68 kg
Package size203 × 152 × 51 mm

Questions about this item

How much noise and heat does the 7200 RPM mechanism produce during continuous operation?

The drive is described as whisper-quiet and uses perpendicular recording technology, which reduces mechanical chatter while the 7200 RPM spindle runs at a steady speed.

What cables and host interface are required to connect the SATA 3.0Gb/s interface?

You need a standard SATA data cable and a SATA power connector from the power supply; the drive plugs directly into any motherboard or controller with a SATA 3.0Gb/s port.

Will the 3.5 inch form factor and SATA interface work alongside an older IDE drive on the same system?

Yes, the 3.5 inch drive uses a native SATA 3.0Gb/s interface, so it can coexist with legacy IDE devices on a motherboard that provides both SATA and IDE connectors.

More in 3.5-Inch Internal Desktop HDDs

Similar items