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 hard drive bare unit

Seagate

Seagate ST3400620NS 400GB 7200 RPM 16MB Cache SATA 3.5" internal hard drive

SKU CH-7B4S-A5F4F MPN ST3400620NS

A 400GB 3.5" SATA desktop hard drive spinning at 7200 RPM with 16MB cache and 4.16ms average latency

  • Total capacity400 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeDesktop
  • Rotational speed7,200 RPM
  • 7200 RPM spindle speed keeps data access responsive
  • 16 MB cache buffers bursts for smoother throughput
  • SATA 3.0 Gb/s interface fits standard desktop controllers
  • 5-inch form factor matches common drive bays
  • 400 GB capacity stores operating system and core files

Enterprise-Grade SATA Drive

The Seagate BarraCuda ES ST3400620NS is a 400GB 3.5-inch internal hard drive built for desktop and enterprise storage. It spins at 7200 RPM with a 16MB cache and connects via a SATA 3.0Gb/s interface. The bare-drive unit is supplied new and rated for continuous operation in demanding environments.

Suited For RAID And Always-On Arrays

This drive suits system integrators and IT managers who need a reliable SATA drive for RAID arrays, backup servers or high-duty-cycle workstations. It is not for buyers who need a faster interface than 3.0Gb/s, nor for users who require a larger cache than 16MB for sustained random workloads.

SATA 3.0Gb/s Interface Decides Compatibility

The single specification that determines fit is the SATA 3.0Gb/s interface. Your motherboard or controller must support this exact link speed to recognise the drive at full performance. Verify the host connector before purchase.

How it compares

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

Price $98.99
Typical for this category: the median of 4,938 items is $107.99.
Total capacity 400 GB
Lower than about 84% of the 2,372 comparable items (median 2 TB).
Price per TB $247.47 per TB
Pricier than about 82% 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 ES
Model nameST3400620NS
Total capacity400 GB
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Flash memory typeDesktop
Cache memory16 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.45 kg
Package size152 × 102 × 36 mm

Questions about this item

What is the cache size that limits sustained write throughput on the ST3400620NS?

The 16MB cache buffers bursts, but sustained writes are limited by the 7200 RPM platters and SATA 3.0Gb/s interface.

How much heat and noise does the 3.5-inch 7200 RPM drive produce during all-day operation?

Expect typical 3.5-inch enterprise drive acoustics and heat; a standard drive bay with airflow keeps temperatures in spec.

Which SATA host interface must the system provide for this 3.0Gb/s drive to work?

Any SATA 1.5Gb/s or 3.0Gb/s port on a desktop motherboard or RAID controller will run the drive at its rated speed.

More in 3.5-Inch Internal Desktop HDDs

Similar items