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Silver 3.5 inch SATA hard drive bare drive

Seagate

Seagate BarraCuda 7200.8 ST3300831AS 300GB 7200 RPM 8MB Cache SATA 1.5Gb/s 3.5" internal hard drive

SKU CH-Q6D6-SJGH1 MPN ST3300831AS

300 GB desktop drive with 7200 RPM, 8 MB cache and SATA 1.5Gb/s interface

  • Total capacity300 GB
  • Interface typeSATA 1.5Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory8 MB
  • 7200 RPM spindle speed delivers responsive desktop performance
  • 300 GB capacity stores operating system and everyday files
  • 8 MB cache buffers bursts for smoother data flow
  • SATA 1.5 Gb/s interface connects to legacy motherboards directly
  • SoftSonic motor and Enhanced G-Force Protection reduce noise and vibration

300 GB 7200 RPM desktop drive

This 3.5 inch Seagate BarraCuda 7200.8 model ST3300831AS provides 300 GB of storage on a SATA 1.5Gb/s interface. It spins at 7200 RPM with an 8 MB cache and 4.16 ms average latency. The bare drive includes NCQ support, a SoftSonic motor and Enhanced G-Force Protection. Condition is new.

Suits older SATA desktops not faster interfaces

This drive fits systems built for SATA 1.5Gb/s where a 300 GB 7200 RPM mechanical disk matches the original specification. Builders who need higher throughput or larger volumes should look at newer interfaces. The bare drive packaging means no cables or brackets are included.

SATA 1.5Gb/s interface decides compatibility

The single specification that determines fit is the SATA 1.5Gb/s interface; the host must provide this exact connection. Capacity of 300 GB and 7200 RPM speed follow from the drive design but the interface is the deciding factor.

How it compares

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

Price $78.99
Cheaper than about 59% of the 4,938 comparable items (median $107.99).
Total capacity 300 GB
Lower than about 88% of the 2,372 comparable items (median 2 TB).
Price per TB $263.30 per TB
Pricier than about 82% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda 7200.8
Model nameST3300831AS
Total capacity300 GB
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory8 MB
Ports & slots
Interface typeSATA 1.5Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.69 kg
Package size203 × 152 × 51 mm

Questions about this item

What size drive bay does the 3.5" BarraCuda 7200.8 need?

The ST3300831AS fits a standard 3.5-inch internal bay and uses the regular SATA data and power connectors found on desktop motherboards and power supplies.

Which jumper or BIOS step is often missed when installing this SATA 1.5Gb/s drive?

No jumper is required for SATA operation; the common mistake is leaving the SATA controller disabled in BIOS so the 300GB drive does not appear at boot.

When should the 8MB cache drive be replaced under normal desktop use?

Plan replacement if SMART attributes show reallocated sectors, seek errors climb, or the SoftSonic motor develops unusual noise after several years of 7200 RPM operation.

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