Western Digital Caviar Green 640 GB
Category: Storage
Manufacturer: Western Digital
Type: HDD
Interface: SATA
Capacity: 640
Read: 550 MB/s
Western Digital Caviar Green 640 GB
Type
HDD
Interface
SATA
Capacity
640
Read
550 MB/s
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Overview
A 640GB 3.5" HDD on the SATA interface. Sequential throughput tops out at 550 MB/s reads and 520 MB/s writes, backed by 64MB of cache. SATA throughput caps near 550 MB/s — fine for game libraries and backups, slower for heavy scratch work. Drop it into the PlanMyPC builder to check compatibility with the rest of your parts.
Support and warranty service run through Western Digital, with terms that vary by region. The full specification sheet below breaks out every listed detail, and the compatibility checker flags conflicts with parts already in your build. Not sold on this particular drive? Browse the category listing to line it up against similarly priced alternatives.
| Specification | Value |
|---|---|
| Type | HDD |
| Cache | 64 |
| Capacity | 640 |
| Interface | SATA |
| Read Speed | 550 MB/s |
| Form Factor | 3.5" |
| Write Speed | 520 MB/s |
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