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 SATA hard drive with circuit board visible

Seagate

Seagate ST1000NM0055 1TB 3.5" 7200 RPM 128MB cache 512n SATA internal hard drive

SKU CH-03RK-15ESB MPN ST1000NM0055

A 1 TB 3.5-inch enterprise hard drive spinning at 7200 RPM with 128 MB cache and 512n SATA interface

  • Total capacity1 TB
  • Interface type512n SATA
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeSLC
  • Rotational speed7,200 RPM

Capacity 1TB

  • Enterprise-grade reliability with 7200 RPM spindle speed
  • 128 MB cache accelerates sustained throughput
  • 512n SATA interface ensures broad host compatibility
  • Conventional magnetic recording stores 1 TB on 3.5-inch form factor
  • 16 ms average latency supports low-latency workloads

Enterprise storage drive

The Seagate ST1000NM0055 is a 1TB 3.5-inch hard drive built for enterprise storage systems and bulk-data applications. It uses conventional magnetic recording technology and a 7200 RPM spindle speed to deliver consistent throughput in multi-drive environments. This new drive targets IT professionals who need reliable capacity for servers or NAS arrays.

512n SATA interface

The drive connects through a 512n SATA interface, which matches the native sector size expected by many legacy controllers and operating systems. A 128MB cache buffers write bursts and reduces average latency to 4.16ms during mixed workloads. Buyers whose hardware requires 4Kn or 512e emulation should verify controller compatibility before purchase.

Thermal and power profile

Physical dimensions are 26.10mm height, 101.85mm width and 147.00mm length, fitting standard 3.5-inch drive bays. The 7200 RPM motor produces typical enterprise acoustic levels and heat output under continuous operation. Power draw scales with workload intensity; system builders should confirm their chassis cooling and power budget accommodate sustained drive activity.

How it compares

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

Price $81.99
Cheaper than about 58% of the 4,938 comparable items (median $107.99).
Total capacity 1 TB
Lower than about 60% of the 2,372 comparable items (median 2 TB).
Price per TB $81.99 per TB
Pricier than about 58% 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
Model nameST1000NM0055
Total capacity1 TB
Recommended useFor Enterprise Storage
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Flash memory typeSLC
Cache memory128 MB
Ports & slots
Interface type512n SATA
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.85 mm
Maximum length147 mm
Shipping weight0.62 kg
Package size164 × 133 × 36 mm

Other versions of this model

3 more in the same range

Questions about this item

What does the 7200 RPM spindle speed mean for everyday workloads on this drive?

The 7200 RPM speed delivers an average latency of 4.16ms, giving quicker random access for operating system files and database workloads than slower-spinning drives.

How does the 512n SATA interface limit real-world throughput?

The SATA link caps sustained transfer at the interface maximum, so sequential reads and writes cannot exceed that bandwidth regardless of the 128MB cache.

Will the 3.5-inch form factor with 26.10mm height fit my standard drive bay?

Yes, the drive measures 147.00mm long, 101.85mm wide and 26.10mm high, matching the standard 3.5-inch bay dimensions used in most desktop chassis and server trays.

More in 3.5-Inch Internal Desktop HDDs

Similar items