# Seagate Momentus 500GB SATA 3Gb/s 16MB Cache 2.5 Inch Internal NB Hard Drive

- Category: Storage
- Brand: Seagate
- Model: ST9500420AS
- Part number: ST9500420AS
- Price (US): $148.50
- Price last checked: 2026-08-05
- Rating: 4.4/5 from 253 Amazon reviews
- Warranty: 3 years
- Product page: https://buildmypc.net/component-details/storage/seagate-st9500420as/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Seagate |
| Model | ST9500420AS |
| Maximum Capacity | 500 GB |
| Form Factor | 2.5" (HDD) |
| Cache Memory | 16 MB |
| Interface | SATA 3 Gb/s |

## Key Features

- Two Year Warranty
- Best-Fit Applications; High-performance and mainstream laptop PCs, Small form factor PCs, Workstations, Industrial applications
- SATA 3.0Gb/s Interface, 500 GB Capacity
- 7,200 RPM Spin Speed,16 MB Cache Buffer
- Average latency 4.17 msec, Random read seek time 11.0 msec, Random write seek time 13.0 msec
- 7,200 RPM Spin Speed,16 MB Cache Buffer
- SATA 3.0Gb/s Interface, 500 GB Capacity
- Average latency 4.17 msec, Random read seek time 11.0 msec, Random write seek time 13.0 msec
- Best-Fit Applications; High-performance and mainstream laptop PCs, Small form factor PCs, Workstations, Industrial applications

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