Seagate ST3320620A 320GB Ultra ATA/100 desktop hard drive front view

Seagate ST3320620A Barracuda 7200.10 top view

Seagate ST3320620A IDE PATA connector angled view

Seagate ST3320620A drive label specifications view

Seagate

Seagate ST3320620A – 320GB Ultra ATA/100 IDE PATA | 3.5" | 7,200 RPM | Desktop HDD

Name: Seagate ST3320620A – 320GB Ultra ATA/100 IDE PATA | 3.5" | 7,200 RPM | Desktop HDD
Brand: Seagate
SKU: ST3320620A
Price: 85.00 USD
Availability: InStock

$85.00

Tax included.

Product variants

Quantity

Brand New, Factory Sealed | In Stock | Bulk Orders Available

Brand New, Factory Sealed | In Stock | Bulk Orders AvailableThe ST3320620A is a 320GB Ultra ATA/100 IDE PATA hard drive featuring 7,200 RPM spindle speed, 16MB cache, and 11ms average seek time in a 3.5" form factor. Built for mid-2000s desktop systems, it is ideal for performance PCs, gaming workstations, and legacy system rebuilds. Compatible with motherboards featuring IDE/PATA controllers and systems requiring ATA-6 support. Features pioneering perpendicular recording technology that enabled increased areal density and reliability compared to previous longitudinal recording drives of its era.

Specifications

Manufacturer: Seagate
Model: ST3320620A
Capacity: 320GB
Interface: Ultra ATA/100 IDE PATA
Spindle Speed: 7,200 RPM
Cache: 16MB
Form Factor: 3.5"
Seek Time: 11ms average
Latency: 4.16ms average
MTBF: 600,000 hours
Drive Type: Desktop HDD
Warranty: 90 days

Product Features

Perpendicular recording technology for increased areal density
Tunneling Giant Magnetoresistive (TGMR) heads
Ultra ATA/100 interface with 100MB/s burst transfer rate
Adaptive Fly Height technology for consistent performance
Clean Sweep automatic calibration
Enhanced G-Force Protection
SoftSonic motor for quiet operation
S.M.A.R.T. drive monitoring support

Compatibility

Compatible with desktop PCs and workstations featuring IDE/PATA controllers, ATA-6 compliant motherboards, and systems requiring 40-pin IDE connectors. Not compatible with SATA-only systems or modern motherboards without legacy IDE support.

Shipping & Returns

Free Shipping: We currently offer free Economy Shipping within the continental U.S. with no minimum order required. Expedited shipping is available at standard carrier rates.
Same-Day Shipping: Order placed before 2PM PST will ship the same day. Orders received after this time will ship the following business day.
Hassle-Free Returns: If you're not completely satisfied with your purchase, simply return it within 10 days for a hassle-free refund or exchange.

320GB Ultra ATA/100 7,200 RPM Perpendicular Recording Factory Sealed

Why the ST3320620A is the right desktop drive

The Barracuda 7200.10 series represents Seagate's transition to perpendicular recording technology, offering significantly improved areal density over previous longitudinal recording drives. With 320GB capacity and 7,200 RPM performance, this drive delivered excellent price-to-performance ratios for mid-2000s desktop systems. The perpendicular recording breakthrough enabled higher capacity storage in the familiar 3.5" form factor while maintaining compatibility with existing IDE/PATA infrastructure.

Perpendicular Recording Technology

First-generation perpendicular recording enables higher data density by storing bits vertically rather than horizontally. This breakthrough technology improved reliability and capacity compared to traditional longitudinal recording methods.

High-Performance 7,200 RPM Design

7,200 RPM spindle speed with 16MB cache delivers excellent random access performance for desktop applications. 11ms average seek time provides responsive file access for gaming and productivity workloads.

Legacy System Integration

Ultra ATA/100 interface ensures compatibility with period-correct motherboards and IDE controllers. Perfect for vintage computing projects, retro gaming builds, and maintaining legacy business systems.

Enhanced Reliability Features

Adaptive Fly Height technology and Enhanced G-Force Protection defend against handling damage and environmental factors. SoftSonic motor design reduces acoustic noise during operation.

Brand New, Factory Sealed Stock

Available as new factory sealed units — ideal for system integrators, vintage computing enthusiasts, and legacy system maintenance professionals.

Frequently Asked Questions

Frequently asked questions for IDE, including information on usage, configuration, and compatibility.

1. What is an IDE hard drive?

An IDE (Integrated Drive Electronics) hard drive is a legacy type of storage device that connects to a computer using a 40-pin ribbon cable and Molex power connector. It was widely used before SATA drives became standard.

2. Can IDE hard drives be used in modern computers?

Most modern PCs do not have IDE ports. However, you can still use an IDE hard drive with a compatible IDE controller card or an IDE-to-SATA/USB adapter.

3. What devices are IDE hard drives compatible with?

IDE hard drives are commonly used in older desktops, servers, DVR systems, legacy industrial equipment, and other electronics that require ATA/100 or ATA/133 interfaces.

4. Are IDE and PATA the same thing?

Yes. IDE is also known as PATA (Parallel ATA). Both terms refer to the same interface standard, which uses wide ribbon cables to connect drives.

5. How do I know if my system supports an IDE hard drive?

Check if your motherboard has a 40-pin IDE connector. If not, you can use an adapter or external enclosure that converts IDE to SATA or USB.

6. What is the maximum capacity of an IDE hard drive?

Most IDE hard drives range from a few hundred megabytes to 500GB, though practical support depends on your system’s BIOS limitations.

7. Can IDE hard drives be used for external storage?

Yes. By using an IDE-to-USB adapter or external IDE enclosure, you can repurpose an IDE hard drive as an external storage device.