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Silver 3.5 inch internal hard drive with SATA connectors

Buffalo Technology

Buffalo Technology OP-HD3.0QH 3TB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-GWCK-3TJ8Z MPN OP-HD3.0QH

3 TB desktop drive with SATA 3.0 Gb/s interface in a 3.5 inch form factor

  • Total capacity3 TB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Max height1.18 in (30 mm)
  • Maximum width4.13 in (104.9 mm)
  • Maximum length6.7 in (170.2 mm)
  • 3TB capacity stores large media libraries and backups
  • SATA 3.0Gb/s interface provides reliable data transfer for desktop systems
  • Standard 3.5-inch form factor fits most desktop drive bays
  • Slim 1.18-inch height allows installation in compact chassis
  • Available since 2015 as a proven storage solution

Three-terabyte desktop storage

The Buffalo Technology OP-HD3.0QH is a 3.5 inch internal hard drive with a 3TB capacity and a SATA 3.0Gb/s interface. It fits standard desktop drive bays measuring up to 1.18 inches high, 4.13 inches wide and 6.70 inches long. This drive suits users adding bulk storage to a workstation or home server.

Sustained write behaviour

The SATA 3.0Gb/s link sets the ceiling for continuous data transfer during long copy or backup jobs. Mechanical throughput will vary with file size and fragmentation but remains consistent across the full 3TB span. The drive handles sequential workloads such as media archiving or disk imaging without the thermal throttling seen in smaller form factors.

Thermals and power in use

A 3.5 inch mechanism running at 30 mm height dissipates heat through the metal chassis into the case airflow. Acoustic output stays at typical desktop levels during idle and seek operations. Power draw follows the SATA specification for 3.5 inch devices, requiring only the standard 12 V and 5 V rails from the system supply.

How it compares

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

Price $174.99
Pricier than about 64% of the 4,938 comparable items (median $107.99).
Total capacity 3 TB
Higher than about 60% of the 2,372 comparable items (median 2 TB).
Price per TB $58.33 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameBUFFALO
Model nameOP-HD3.0QH
Total capacity3 TB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height1.18 in (30 mm)
Maximum width4.13 in (104.9 mm)
Maximum length6.7 in (170.2 mm)
Shipping weight1.00 kg
Package size208 × 144 × 69 mm

Questions about this item

How much power and heat does the 3TB SATA 3.0Gb/s drive produce when running continuously?

The 3.5" drive fits standard desktop bays at 1.18" high, 4.13" wide and 6.70" long, drawing typical SATA power levels for a 3TB mechanical disk.

What motherboard connector and bay size are required to install this 3.5" SATA drive?

A free SATA 3.0Gb/s port and a 3.5" drive bay measuring at least 1.18" high, 4.13" wide and 6.70" deep are needed.

Will this SATA 3.0Gb/s drive work in a system that only has SATA 1.5Gb/s ports?

Yes, the SATA 3.0Gb/s interface is backward compatible with older 1.5Gb/s ports, operating at the slower speed.

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