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 bare hard drive with green circuit board visible

Seagate

Seagate ST31000520AS 1TB 5900 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-11GV-78ADT MPN ST31000520AS

A 1 TB 3.5-inch desktop drive spinning at 5900 RPM with 32 MB cache and a SATA 3.0Gb/s interface

  • Total capacity1 TB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed5,900 RPM
  • Cache memory32 MB
  • 1 TB storage capacity for desktop systems
  • 5900 RPM spindle speed reduces power draw
  • 32 MB cache improves data access speed
  • SATA 3.0 Gb/s interface for broad compatibility
  • 5 inch form factor fits standard drive bays

1 TB SATA desktop drive

The Seagate BarraCuda LP ST31000520AS is a 3.5 inch internal hard drive with 1 TB capacity, 5900 RPM spindle speed and 32 MB cache. It connects over a SATA 3.0 Gb/s interface and is supplied as a bare drive. The low-power design targets desktop systems that prioritise reduced energy draw over peak throughput.

Low power and cooler running

The drive consumes up to 50 percent less power than standard desktop models, which lowers heat output and can reduce component stress over time. Average latency is 5.1 ms at the rated spindle speed. The unit has been erased to DoD 5220.22 M compliance and tested functional; up to 25 bad sectors may be present.

Upgrade from smaller or hotter drives

This drive replaces lower-capacity desktop disks or higher-power units where a cooler, quieter 1 TB volume is preferred. The jump is worthwhile when the system can accept a SATA 3.0 Gb/s device and does not require the faster access times of solid-state storage. It is not suited for workloads demanding sustained high transfer rates or enterprise-grade reliability.

How it compares

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

Price $107.99
Typical for this category: the median of 4,938 items is $107.99.
Total capacity 1 TB
Lower than about 60% of the 2,372 comparable items (median 2 TB).
Price per TB $107.99 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 LP
Model nameST31000520AS
Total capacity1 TB
Performance
Rotational speed5,900 RPM
Mean latency5.1 ms
Storage
Cache memory32 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.64 kg
Package size148 × 103 × 27 mm

Questions about this item

How do I install the ST31000520AS 3.5" SATA drive and what step is often missed?

Mount the 3.5" drive in a bay, attach a SATA data cable to the motherboard and a SATA power connector from the PSU, then initialise and format the 1TB volume in Disk Management — the step often missed is creating the partition and file system after the drive appears in BIOS.

What maintenance or replacement will this 5900 RPM drive need later?

As a mechanical drive, the ST31000520AS may develop bad sectors over time; the supplier notes up to 25 bad sectors can be present on used units, so monitor SMART health and replace the drive if reallocated sector counts rise.

What limit appears first under sustained use on this 32MB cache SATA 3.0Gb/s drive?

The 5900 RPM spindle speed and 5.1ms average latency set the sustained throughput ceiling, so long sequential workloads will hit the mechanical transfer limit before the SATA 3.0Gb/s interface saturates.

More in 3.5-Inch Internal Desktop HDDs

Similar items