Western Digital Caviar Green (500GB) review

Price when reviewed

Western Digital’s Caviar Green range of drives eschews maximum performance in favour of green credentials – potentially important in an age where people pay attention to the wattage of their machines and opt for low-power media-centre PCs.

Western Digital Caviar Green (500GB) review

To this end, Caviar Green drives have a range of environmentally-friendly features. The rotational speed of the drive, for instance, varies between 5,400rpm and 7,200rpm – depending on the model – to save power. And here an impressively low power draw of 4W is the result.

Understandably, there’s a performance trade-off. A read speed of 60.5MB/sec is the slowest we’ve seen this month, with a write speed of 52.2MB/sec proving equally disappointing. Access times of 14ms and 5ms for reading and writing files are good, but they can’t compete with the likes of our Labs-winning Samsung drives.

Nevertheless, if you’re looking for a green drive and don’t want to spend a fortune, the 500GB Western Digital is worth considering.


Capacity 500GB
Hard disk usable capacity 465GB
Hard disk type Mechanical
Cache size 16MB
Spindle speed 7,200RPM
Seek time (ms) 14ms
Cost per gigabyte 8.8p

Noise and power

Idle power consumption 4W

Performance tests

HD Tach burst speed 206.9MB/sec
HD Tach random access speed 14.1ms
HD Tach average sequential read speed 64.2MB/sec

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