# Western Digital Caviar SE16 WD6400AAKS Hard Drive

- Category: Storage
- Brand: Western Digital
- Model: WD6400AAKS-20PK
- Part number: WD6400AAKS
- Price (US): currently unavailable
- Price last checked: 2026-08-05
- Rating: 3.5/5 from 5 Amazon reviews
- Warranty: 3 years
- Product page: https://buildmypc.net/component-details/storage/western-digital-wd6400aaks-20pk-wd6400aaks/

## Specifications

| Spec | Value |
| --- | --- |
| Brand | Western Digital |
| Model | WD6400AAKS-20PK |
| Maximum Capacity | 640 GB |
| Form Factor | 3.5" (HDD) |
| Cache Memory | 16 MB |
| Interface | SATA 3 Gb/s |

## Key Features

- Sold Individually

---

Source: BuildMyPC (https://buildmypc.net/) — free PC parts compatibility checker. Prices update daily. As an Amazon Associate, BuildMyPC earns from qualifying purchases.