Word

Description

Value

 

 

 

60–61

Total number of user-addressable LBA sectors available

0FFFFFFFh*

 

(see Section 2.2 for related information)

 

 

*Note: The maximum value allowed in this field is: 0FFFFFFFh

 

 

(268,435,455 sectors, 137 Gbytes). Drives with capacities over 137

 

 

Gbytes will have 0FFFFFFFh in this field and the actual number of

 

 

user-addressable LBAs specified in words 100-103. This is required

 

 

for drives that support the 48-bit addressing feature.

 

 

 

 

62

Retired

0000H

63

Multiword DMA active and modes supported (see note following this

xx07H

 

table)

 

 

 

 

64

Advanced PIO modes supported (modes 3 and 4 supported)

0003H

65

Minimum multiword DMA transfer cycle time per word (120 nsec)

0078H

66

Recommended multiword DMA transfer cycle time per word (120

0078H

 

nsec)

 

 

 

 

67

Minimum PIO cycle time without IORDY flow control (240 nsec)

00F0H

68

Minimum PIO cycle time with IORDY flow control (120 nsec)

0078H

69–74

ATA-reserved

0000H

75

Queue depth

0000H

76

Serial ATA capabilities

xxxxH

77

Reserved for future Serial ATA definition

xxxxH

78

Serial ATA features supported

xxxxH

79

Serial ATA features enabled

xxxxH

80

Major version number

003EH

81

Minor version number

0000H

82

Command sets supported

364BH

83

Command sets supported

7C03H

84

Command sets support extension

4003H

85

Command sets enabled

30xxH

86

Command sets enabled

0001H

87

Command sets enable extension

4000H

88

Ultra DMA support and current mode (see note following this table)

xx3FH

89

Security erase time

0000H

90

Enhanced security erase time

0000H

92

Master password revision code

FFFEH

93

Hardware reset value (see description following this table)

xxxxH

95–99

ATA-reserved

0000H

100–

Total number of user-addressable LBA sectors available (see Section

ST3750640SCE = 1,465,149,168

103

2.2 for related information). These words are required for drives that

ST3750840SCE = 1,465,149,168

 

support the 48-bit addressing feature. Maximum value:

ST3500830SCE = 976,773,168

 

0000FFFFFFFFFFFFh.

ST3400820SCE = 781,422,768

 

 

ST3320820SCE = 625,142,448

 

 

ST3300820SCE = 586,072,368

 

 

ST3250820SCE = 488,397,168

 

 

ST3200820SCE = 390,721,968

 

 

 

34

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

Page 40
Image 40
Seagate ST3320820SCE, ST3250820SCE, ST3300820SCE, ST3750640SCE, ST3750840SCE, ST3400820SCE, ST3500830SCE manual Xx07H

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.