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Silver 3.5 inch bare hybrid drive with circuit board visible

Seagate

Seagate ST1000DX001 1TB 3.5" SSHD 7200 RPM 64MB SATA 6.0Gb/s internal hard drive

SKU CH-K9TS-YNANT MPN ST1000DX001

A 1 TB 3.5-inch hybrid drive combining a 7200 RPM mechanical platter with 8 GB of MLC flash for SSD-like boot and load speeds over a SATA 6.0 Gb/s interface

  • Total capacity1 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory capacity8 GB
  • Flash memory typeMLC

Capacity 1TB

  • 8GB NAND flash accelerates boot and load times
  • 7200 RPM spindle delivers sustained throughput for large files
  • 64MB cache smooths burst I/O for responsive multitasking
  • SATA 6.0Gb/s interface removes bottlenecks on modern motherboards
  • 1TB capacity stores full game libraries and media collections

Hybrid drive for desktop PCs

The Seagate Desktop SSHD ST1000DX001 combines a 1TB mechanical platter with 8GB of MLC NAND flash in a 3.5-inch form factor. It connects through a SATA 6.0Gb/s interface and spins at 7200 RPM with a 64MB cache. The hybrid design targets users who want SSD-like boot and load responsiveness without giving up terabyte-scale capacity.

Thermals noise and power in daily use

A 7200 RPM spindle and flash cache produce typical desktop drive acoustics and heat output for this class. Average seek and write times are quoted below 8.5ms, with 4.16ms average latency. The bare drive measures 19.87mm high by 101.60mm wide by 146.99mm long, fitting standard 3.5-inch bays without extra mounting hardware.

Build integration and system fit

The drive slides into any 3.5-inch bay and uses a standard SATA data and power connection, so no special cables or controllers are required. Its hybrid architecture accelerates frequently used files automatically, freeing the user from manual cache management. Buyers who need pure flash endurance or multiple terabytes beyond 1TB will look elsewhere.

How it compares

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

Price $112.99
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 $112.99 per TB
Pricier than about 66% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineDesktop SSHD
Model nameST1000DX001
Total capacity1 TB
Recommended useHybrid Hard Drives
Performance
Rotational speed7,200 RPM
Average seek time<8.5 ms
Mean write time<8.5 ms
Mean latency4.16 ms
Memory
Flash memory capacity8 GB
Storage
Flash memory typeMLC
Cache memory64 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height19.87 mm
Maximum width101.6 mm
Maximum length146.99 mm
Shipping weight0.52 kg
Package size146 × 102 × 25 mm

Other versions of this model

1 more in the same range

Questions about this item

How do I install the 3.5" SATA 6.0Gb/s drive and what step is often missed?

Mount the drive in a 3.5" bay using four screws, connect the SATA data and power cables, then enable AHCI mode in the BIOS before installing the OS so the 8GB NAND cache works correctly.

What maintenance or replacement will the ST1000DX001 need later?

No scheduled maintenance is required; the 8GB MLC NAND and 7200 RPM platters are sealed inside. Replace the drive only if SMART attributes report reallocated sectors or the 5-year limited warranty expires.

What limit appears first during sustained heavy writes on this hybrid drive?

After the 8GB NAND write buffer fills, sustained throughput drops to the 7200 RPM mechanical speed with 4.16ms average latency and <8.5ms average write time.

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