# Seagate 1TB Constellation SATA 6Gb/s 64MB Cache 2.5-Inch Internal Bare Drive 

- Category: Storage
- Brand: Seagate
- Model: ST91000640NS
- Part number: ST91000640NS
- Price (US): $81.17
- Price last checked: 2026-08-05
- Rating: 4.0/5 from 93 Amazon reviews
- Warranty: 5 years
- Product page: https://buildmypc.net/component-details/storage/seagate-st91000640ns/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Seagate |
| Model | ST91000640NS |
| Maximum Capacity | 1 TB |
| Form Factor | 2.5" (HDD) |
| Cache Memory | 64 MB |
| Interface | SATA 6 Gb/s |

## Key Features

- Highest capacities and best reliability available in an SFF, 7200-RPM enterprise-class nearline drive
- Best-in-class rotational vibration tolerance ensures unrivaled performance in high spindle-density applications, and multi-drive firmware maximizes system availability
- SATA 6Gb/s for economical 7200-RPM performance
- 2.5-inch 1TB capacity-optimized drive for dense, space-constrained data centers allows you to store twice as much data in the same footprint
- Not intended for laptops

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