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Silver 3.5 inch internal hard drive with IDE connector and circuit board visible

Seagate

Seagate DB35.3 ST3300820ACE 300GB 7200 RPM 8MB IDE Ultra ATA 100 3.5" internal hard drive

SKU CH-V63Q-8YWYH MPN ST3300820ACE

A 300 GB IDE Ultra ATA 100 drive at 7200 RPM with 8 MB cache, built for DVR recording up to 750 hours standard or 150 hours high-definition

  • Total capacity300 GB
  • Interface typeIDE Ultra ATA 100
  • Form factor3.5 in (PATA)
  • Rotational speed7,200 RPM
  • Cache memory8 MB
  • Mean latency4.16 ms
  • Up to 750 hours standard TV recording capacity
  • Up to 150 hours high-definition video storage
  • 7200 RPM spindle speed for responsive DVR playback
  • 8 MB cache buffers streaming video data
  • 16 ms average latency supports smooth recording

Legacy DVR storage

This 300 GB IDE Ultra ATA 100 drive spins at 7200 RPM with 8 MB cache and 4.16 ms average latency. It is built for digital video recorders and surveillance systems that require continuous streaming performance. The DB35.3 series includes DynaPlay technology and SoftSonic motor design for quiet, reliable operation in always-on environments.

DVR integrators and PC restorers

Suits installers maintaining or upgrading legacy DVR appliances that use the PATA interface and need up to 750 hours of standard TV or 150 hours of high-definition recording capacity. Not for builders whose motherboards lack an IDE connector or who require the higher throughput of modern serial interfaces.

IDE Ultra ATA 100 interface

The parallel ATA 100 connection is the single specification that determines fit; the drive will only work in systems with a compatible 40-pin IDE controller and 3.5 inch drive bay. Dimensions are 26.1 mm height, 101.85 mm width and 146.99 mm length.

How it compares

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

Price $79.99
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 $266.63 per TB
Pricier than about 83% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineDB35.3
Model nameST3300820ACE
Total capacity300 GB
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory8 MB
Ports & slots
Interface typeIDE Ultra ATA 100
Size & build
Form factor3.5 in (PATA)
Max height26.1 mm
Maximum width101.85 mm
Maximum length146.99 mm
Shipping weight0.59 kg
Package size151 × 121 × 28 mm

Questions about this item

How much noise and heat does the 7200 RPM ST3300820ACE produce during continuous DVR recording?

Seagate SoftSonic motor technology and optimized seek profiles are designed for years of quiet operation, while DynaPlay technology includes power optimization for the demanding DVR environment.

What host interface must my system provide for the IDE Ultra ATA 100 connection on this 3.5 inch drive?

The drive requires a standard 40-pin PATA/IDE controller capable of Ultra ATA 100 transfers; a Molex power connector is also needed for the 3.5 inch form factor.

Will the ST3300820ACE work alongside an older IDE drive on the same cable without performance loss?

Each drive on a shared IDE cable negotiates its own Ultra ATA 100 mode, so the 7200 RPM unit retains its throughput while an older device runs at its lower supported speed.

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