2.4Recording and interface technology

 

750GB

500GB

400GB

320GB

300GB

250GB

 

 

 

 

 

 

 

Interface

Serial ATA (SATA)

 

 

 

 

 

 

 

 

 

 

Recording method

Perpendicular

 

 

 

 

 

 

 

 

 

 

 

Recording density, KBPI (kbits/inch max)

926

813

781

 

 

813

 

 

 

 

 

 

 

Track density, KTPI (ktracks/inch avg)

145

 

 

 

 

 

 

 

 

 

 

 

 

Areal density (Gbits/inch2 avg)

128.2

114.4

 

 

 

 

Spindle speed (RPM) (± 0.2%)

7,200

 

 

 

 

 

 

 

 

 

 

 

 

Internal data transfer rate (Mbits/sec max)

1,030

 

 

 

 

 

 

 

 

 

 

 

 

Sustained data transfer rate (Mbytes/sec max)

78

72

 

 

 

 

 

 

 

 

 

 

 

I/O data-transfer rate (Mbytes/sec max)

300 (Ultra DMA mode 5)

 

 

 

 

 

 

 

 

 

 

2.5

Physical characteristics

 

 

 

Drive specification

 

 

 

Maximum height

 

 

(mm)

26.1

 

(inches)

1.028

 

 

Maximum width

 

 

(mm)

101.6

 

(inches)

 

4.000 +/- 0.010

 

 

 

 

Maximum length

 

 

(mm)

146.99

 

(inches)

5.787

 

 

Typical weight

 

 

ST3320820SCE, ST3300820SCE and ST3250820SCE

580 grams (1.28 lbs)

 

ST3500830SCE and ST3400820SCE

635 grams (1.40 lbs)

 

ST3750640SCE and ST3750840SCE

720 grams (1.59 lbs)

 

 

 

Cache Size

ST3750640SCE

16 Mbytes

 

 

ST3750840SCE

8 Mbytes

 

ST3500830SCE

 

 

ST3400820SCE

 

 

ST3320820SCE

 

 

ST3300820SCE

 

 

ST3250820SCE

 

 

 

 

DB35.3 Series Serial ATA Product Manual, Rev. D

13

Page 19
Image 19
Seagate ST3320820SCE Recording and interface technology, Physical characteristics, 750GB 500GB 400GB 320GB 300GB 250GB

ST3400820SCE, ST3300820SCE, ST3750840SCE, ST3250820SCE, ST3750640SCE specifications

Seagate’s series of hard drives, including the ST3320820SCE, ST3500830SCE, ST3750640SCE, ST3250820SCE, and ST3750840SCE, comprise a robust lineup designed for both consumer and professional use.

The ST3320820SCE model features a storage capacity of 320GB and operates at a rotational speed of 7200 RPM, allowing for faster data access and improved overall performance. This drive is equipped with SATA interface, providing higher data transfer rates and enhanced connectivity options. Its 8MB cache enhances read and write speeds, thus making it suitable for multitasking environments.

In comparison, the ST3500830SCE offers a larger capacity with 500GB storage. This drive is also based on the same 7200 RPM speed standard, ensuring optimal performance for both gaming applications and data-heavy tasks. The SATA interface remains a central feature, promoting seamless integration into a range of PC configurations.

The ST3750640SCE takes the storage capabilities further, offering a generous 750GB space. It shares similar technological advancements such as the SATA interface and 7200 RPM speed, making it ideal for users needing extensive storage for multimedia files, software applications, and backups. The reliable performance alongside its increased capacity makes it a favored choice among professionals.

The ST3250820SCE model is targeted towards those needing a balance between performance and cost-efficiency. With a 250GB capacity, this drive provides ample space for everyday usage while maintaining a robust 7200 RPM speed and 8MB cache. This makes it an ideal option for entry-level systems and general-purpose computing.

Lastly, the ST3750840SCE offers up to 750GB of space, similar to the ST3750640SCE, but also incorporates advanced technologies for enhanced reliability and durability. This includes features like Seagate's Smart Align technology, which optimizes the drive's performance by efficiently managing data, especially with modern 4K sector drives.

Overall, these Seagate models cater to a wide spectrum of users, from casual home users to professionals requiring reliable and high-performance storage solutions. With a combination of speed, capacity, and innovative technologies, they stand out as solid choices in the hard drive market.